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e59e529635f5a033aff905e95a901b17fe0f9833
mariadb/storage/pbxt/mysql-test/main/r/partition_pruning.rdiff
Sergei Golubchik e4bfb6f161 pbxt suite is now a main-pbxt overlay
2012-02-29 21:55:04 +01:00

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--- r/partition_pruning.result 2012-02-23 15:57:49.000000000 +0100
+++ /usr/home/serg/Abk/mysql/5.5-mtr/storage/pbxt/mysql-test/main/r/partition_pruning.reject 2012-02-23 22:41:44.000000000 +0100
@@ -18,7 +18,7 @@
# # # # # # # # # 3 #
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 7;
id select_type table partitions type possible_keys key key_len ref rows Extra
-# # # # # # # # # 9 #
+# # # # # # # # # 7 #
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
# # # # # # # # # 3 #
@@ -59,7 +59,7 @@
2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a < 4;
a
-1
@@ -69,7 +69,7 @@
3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a < 5;
a
-1
@@ -80,7 +80,7 @@
4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a < 6;
a
-1
@@ -92,7 +92,7 @@
5
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 6;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,p5 index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,p5 range PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a < 7;
a
-1
@@ -105,7 +105,7 @@
6
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 7;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 9 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index
SELECT * FROM t1 WHERE a <= 1;
a
-1
@@ -122,7 +122,7 @@
2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a <= 3;
a
-1
@@ -132,7 +132,7 @@
3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a <= 4;
a
-1
@@ -143,7 +143,7 @@
4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a <= 5;
a
-1
@@ -155,7 +155,7 @@
5
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,p5 index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,p5 range PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a <= 6;
a
-1
@@ -168,7 +168,7 @@
6
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 6;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 9 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index
SELECT * FROM t1 WHERE a <= 7;
a
-1
@@ -182,37 +182,37 @@
7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 7;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 9 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index
SELECT * FROM t1 WHERE a = 1;
a
1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p1 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 2;
a
2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p2 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 3;
a
3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p3 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p3 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 4;
a
4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p4 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p4 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 5;
a
5
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p5 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p5 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 6;
a
6
@@ -237,7 +237,7 @@
8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1,p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 8 Using where; Using index
+1 SIMPLE t1 p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a >= 2;
a
2
@@ -249,7 +249,7 @@
8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
+1 SIMPLE t1 p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a >= 3;
a
3
@@ -260,7 +260,7 @@
8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a >= 4;
a
4
@@ -270,7 +270,7 @@
8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p4,p5,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p4,p5,max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a >= 5;
a
5
@@ -306,7 +306,7 @@
8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2,p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
+1 SIMPLE t1 p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a > 2;
a
3
@@ -317,7 +317,7 @@
8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p3,p4,p5,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a > 3;
a
4
@@ -327,7 +327,7 @@
8
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p4,p5,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p4,p5,max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 4;
a
5
@@ -391,7 +391,7 @@
2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a < 4;
a
-1
@@ -401,7 +401,7 @@
3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a < 5;
a
-1
@@ -412,7 +412,7 @@
4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a < 6;
a
-1
@@ -424,7 +424,7 @@
5
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 6;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 8 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a <= 1;
a
-1
@@ -441,7 +441,7 @@
2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a <= 3;
a
-1
@@ -451,7 +451,7 @@
3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3 index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a <= 4;
a
-1
@@ -462,7 +462,7 @@
4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4 index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a <= 5;
a
-1
@@ -474,7 +474,7 @@
5
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 8 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a <= 6;
a
-1
@@ -487,31 +487,31 @@
6
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 6;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 8 Using where; Using index
+1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index
SELECT * FROM t1 WHERE a = 1;
a
1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p1 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 2;
a
2
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p2 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 3;
a
3
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p3 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p3 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 4;
a
4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p4 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 p4 const PRIMARY PRIMARY 4 const 1 Using index
SELECT * FROM t1 WHERE a = 5;
a
5
@@ -535,7 +535,7 @@
7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1,p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 7 Using where; Using index
+1 SIMPLE t1 p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 5 Using where; Using index
SELECT * FROM t1 WHERE a >= 2;
a
2
@@ -546,7 +546,7 @@
7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a >= 3;
a
3
@@ -556,7 +556,7 @@
7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p3,p4,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p3,p4,max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a >= 4;
a
4
@@ -591,7 +591,7 @@
7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2,p3,p4,max index PRIMARY PRIMARY 4 NULL 6 Using where; Using index
+1 SIMPLE t1 p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
SELECT * FROM t1 WHERE a > 2;
a
3
@@ -601,7 +601,7 @@
7
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p3,p4,max index PRIMARY PRIMARY 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p3,p4,max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
SELECT * FROM t1 WHERE a > 3;
a
4
@@ -750,13 +750,13 @@
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pNULL,p2001-01-01 range a a 4 NULL 3 Using where; Using index
+1 SIMPLE t1 pNULL,p2001-01-01 index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1001-01-01 system a NULL NULL NULL 1
+1 SIMPLE t1 p1001-01-01 ref a a 4 const 1 Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 3 Using where; Using index
@@ -765,20 +765,20 @@
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ref a a 4 const 1 Using index
# Disabling warnings for the invalid date
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p2001-01-01 index a a 4 NULL 4 Using where; Using index
@@ -790,7 +790,7 @@
1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 3 Using where; Using index
@@ -916,7 +916,7 @@
1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p1001-01-01 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where
@@ -1079,13 +1079,13 @@
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 3 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1001-01-01 system a NULL NULL NULL 1
+1 SIMPLE t1 p1001-01-01 ref a a 4 const 1 Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 3 Using where; Using index
@@ -1094,20 +1094,20 @@
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ref a a 4 const 1 Using index
# Disabling warnings for the invalid date
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 4 Using where; Using index
@@ -1119,7 +1119,7 @@
1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
@@ -1245,7 +1245,7 @@
1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p1001-01-01 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where
@@ -1408,13 +1408,13 @@
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 3 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1001-01-01 system a NULL NULL NULL 1
+1 SIMPLE t1 p1001-01-01 ref a a 4 const 1 Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 3 Using where; Using index
@@ -1423,20 +1423,20 @@
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index
+1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pNULL ref a a 4 const 1 Using index
# Disabling warnings for the invalid date
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2001-01-01,pNULL index a a 4 NULL 4 Using where; Using index
@@ -1448,7 +1448,7 @@
1 SIMPLE t1 pNULL ref a a 4 const 1 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index
+1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 4 Using where; Using index
@@ -1574,7 +1574,7 @@
1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p1001-01-01 ALL NULL NULL NULL NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where
@@ -1811,7 +1811,7 @@
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 index NULL PRIMARY 7 NULL 0 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -1858,7 +1858,7 @@
1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 index NULL PRIMARY 7 NULL 0 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index
@@ -1891,7 +1891,7 @@
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 index NULL PRIMARY 7 NULL 0 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -1911,7 +1911,7 @@
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 index NULL PRIMARY 7 NULL 0 Using where; Using index
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -2111,7 +2111,7 @@
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -2158,7 +2158,7 @@
1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where
@@ -2191,7 +2191,7 @@
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -2211,7 +2211,7 @@
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -2235,7 +2235,7 @@
# test with an invalid date, which lead to item->null_value is set.
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-99' AS DATETIME);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
Warnings:
Warning 1292 Incorrect datetime value: '2009-04-99'
DROP TABLE t1;
@@ -2266,7 +2266,7 @@
1 SIMPLE t1 p1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a=2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a=1 or a=2;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 3 Using where
@@ -2294,16 +2294,16 @@
insert into t3 values (5),(15);
explain partitions select * from t3 where a=11;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t3 p1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t3 where a=10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t3 p1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t3 where a=20;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t3 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t3 where a=30;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t3 ALL NULL NULL NULL NULL 0 Using where
create table t4 (a int not null, b int not null) partition by LIST (a+b) (
partition p0 values in (12),
partition p1 values in (14)
@@ -2311,11 +2311,11 @@
insert into t4 values (10,2), (10,4);
explain partitions select * from t4 where (a=10 and b=1) or (a=10 and b=2);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t4 p0 system NULL NULL NULL NULL 1
+1 SIMPLE t4 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t4
where (a=10 and b=1) or (a=10 and b=2) or (a=10 and b = 3);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t4 p0 system NULL NULL NULL NULL 1
+1 SIMPLE t4 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t4 where (a=10 and b=2) or (a=10 and b=3)
or (a=10 and b = 4);
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -2370,37 +2370,37 @@
insert into t6 values (1),(3),(5);
explain partitions select * from t6 where a < 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t6 p1 system NULL NULL NULL NULL 1
+1 SIMPLE t6 p1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a >= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 p9 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a > 0 and a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p1,p3 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 5 and a < 12;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 p7,p9 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a > 3 and a < 8 ;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t6 p5,p7 system NULL NULL NULL NULL 1
+1 SIMPLE t6 p5,p7 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a >= 0 and a <= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p1,p3,p5 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t6 where a >= 5 and a <= 12;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1
+1 SIMPLE t6 p5,p7,p9 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a >= 3 and a <= 8;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 3 and a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where
drop table t6;
create table t6 (a int unsigned not null) partition by LIST(a) (
partition p1 values in (1),
@@ -2412,37 +2412,37 @@
insert into t6 values (1),(3),(5);
explain partitions select * from t6 where a < 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t6 p1 system NULL NULL NULL NULL 1
+1 SIMPLE t6 p1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a >= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 p9 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a > 0 and a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p1,p3 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 5 and a < 12;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 p7,p9 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t6 where a > 3 and a < 8 ;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t6 p5,p7 system NULL NULL NULL NULL 1
+1 SIMPLE t6 p5,p7 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a >= 0 and a <= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p1,p3,p5 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t6 where a >= 5 and a <= 12;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1
+1 SIMPLE t6 p5,p7,p9 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a >= 3 and a <= 8;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t6 where a > 3 and a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where
create table t7 (a int not null) partition by RANGE(a) (
partition p10 values less than (10),
partition p30 values less than (30),
@@ -2453,16 +2453,16 @@
insert into t7 values (10),(30),(50);
explain partitions select * from t7 where a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a < 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a <= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a = 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a >= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
@@ -2471,13 +2471,13 @@
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a < 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a <= 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t7 p10,p30 system NULL NULL NULL NULL 1
+1 SIMPLE t7 p10,p30 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t7 where a = 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t7 p30 system NULL NULL NULL NULL 1
+1 SIMPLE t7 p30 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t7 where a >= 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
@@ -2492,13 +2492,13 @@
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p90 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a >= 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p90 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a < 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
@@ -2507,19 +2507,19 @@
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a >= 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 91;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 11 and a < 29;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p30 ALL NULL NULL NULL NULL 2 Using where
drop table t7;
create table t7 (a int unsigned not null) partition by RANGE(a) (
partition p10 values less than (10),
@@ -2531,16 +2531,16 @@
insert into t7 values (10),(30),(50);
explain partitions select * from t7 where a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a < 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a <= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a = 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a >= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
@@ -2549,13 +2549,13 @@
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a < 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p10 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a <= 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t7 p10,p30 system NULL NULL NULL NULL 1
+1 SIMPLE t7 p10,p30 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t7 where a = 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t7 p30 system NULL NULL NULL NULL 1
+1 SIMPLE t7 p30 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t7 where a >= 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
@@ -2570,13 +2570,13 @@
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p90 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a >= 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p90 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a < 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
@@ -2585,19 +2585,19 @@
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a >= 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 91;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t7 where a > 11 and a < 29;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t7 p30 ALL NULL NULL NULL NULL 2 Using where
create table t8 (a date not null) partition by RANGE(YEAR(a)) (
partition p0 values less than (1980),
partition p1 values less than (1990),
@@ -2606,7 +2606,7 @@
insert into t8 values ('1985-05-05'),('1995-05-05');
explain partitions select * from t8 where a < '1980-02-02';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t8 p0,p1 ALL NULL NULL NULL NULL 2 Using where
create table t9 (a date not null) partition by RANGE(TO_DAYS(a)) (
partition p0 values less than (732299), -- 2004-12-19
partition p1 values less than (732468), -- 2005-06-06
@@ -2615,7 +2615,7 @@
insert into t9 values ('2005-05-05'), ('2005-04-04');
explain partitions select * from t9 where a < '2004-12-19';
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t9 p0 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t9 where a <= '2004-12-19';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t9 p0,p1 ALL NULL NULL NULL NULL 2 Using where
@@ -2631,13 +2631,13 @@
insert into t1 values (1),(2),(3);
explain partitions select * from t1 where a1 > 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a1 >= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1,p2 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a1 < 3 and a1 > 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
drop table t1;
create table t3 (a int, b int)
partition by list(a) subpartition by hash(b) subpartitions 4 (
@@ -2652,16 +2652,16 @@
1 SIMPLE t3 p0_p0sp1,p1_p1sp0,p1_p1sp1,p1_p1sp2,p1_p1sp3,p2_p2sp1,p3_p3sp1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t3 where a=4 or b=2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t3 p0_p0sp2,p1_p1sp2,p2_p2sp2,p3_p3sp0,p3_p3sp1,p3_p3sp2,p3_p3sp3 system NULL NULL NULL NULL 1
+1 SIMPLE t3 p0_p0sp2,p1_p1sp2,p2_p2sp2,p3_p3sp0,p3_p3sp1,p3_p3sp2,p3_p3sp3 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t3 where (a=2 or b=1) and (a=4 or b=2) ;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t3 p1_p1sp2,p3_p3sp1 system NULL NULL NULL NULL 1
+1 SIMPLE t3 p1_p1sp2,p3_p3sp1 ALL NULL NULL NULL NULL 2 Using where
drop table t3;
create table t1 (a int) partition by hash(a) partitions 2;
insert into t1 values (1),(2);
explain partitions select * from t1 where a is null;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a is not null;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 2 Using where
@@ -2675,18 +2675,18 @@
where X.b = Y.b and (X.a=1 or X.a=2) and (Y.a=2 or Y.a=3);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE X p1,p2 range a,b a 4 NULL 4 Using where
-1 SIMPLE Y p2,p3 ref a,b b 4 test.X.b 2 Using where
+1 SIMPLE Y p2,p3 ref a,b b 4 test.X.b 1 Using where
explain partitions
select * from t1 X, t1 Y where X.a = Y.a and (X.a=1 or X.a=2);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE X p1,p2 range a a 4 NULL 4 Using where
-1 SIMPLE Y p1,p2 ref a a 4 test.X.a 2
+1 SIMPLE Y p1,p2 ref a a 4 test.X.a 1
drop table t1;
create table t1 (a int) partition by hash(a) partitions 20;
insert into t1 values (1),(2),(3);
explain partitions select * from t1 where a > 1 and a < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a >= 1 and a < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 2 Using where
@@ -2708,10 +2708,10 @@
insert into t1 values (1,1),(2,2),(3,3);
explain partitions select * from t1 where b > 1 and b < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0_p0sp2,p1_p1sp2,p2_p2sp2,p3_p3sp2 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p0_p0sp2,p1_p1sp2,p2_p2sp2,p3_p3sp2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where b > 1 and b < 3 and (a =1 or a =2);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1_p1sp2,p2_p2sp2 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p1_p1sp2,p2_p2sp2 ALL NULL NULL NULL NULL 2 Using where
drop table t1;
create table t1 (a int) partition by list(a) (
partition p0 values in (1,2),
@@ -2867,71 +2867,71 @@
1 SIMPLE t2 p0,p1,p2 ALL NULL NULL NULL NULL 510 Using where
explain partitions select * from t2 where b = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76
+1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 5
explain extended select * from t2 where b = 6;
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 ref b b 5 const 76 100.00
+1 SIMPLE t2 ref b b 5 const 5 100.00
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = 6)
explain partitions select * from t2 where b = 6;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76
+1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 5
explain extended select * from t2 where b in (1,3,5);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 ALL b NULL NULL NULL 910 40.66 Using where
+1 SIMPLE t2 range b b 5 NULL 15 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` in (1,3,5))
explain partitions select * from t2 where b in (1,3,5);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
+1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 15 Using where
explain extended select * from t2 where b in (2,4,6);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 ALL b NULL NULL NULL 910 25.05 Using where
+1 SIMPLE t2 range b b 5 NULL 15 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` in (2,4,6))
explain partitions select * from t2 where b in (2,4,6);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
+1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 15 Using where
explain extended select * from t2 where b in (7,8,9);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 ALL b NULL NULL NULL 910 36.70 Using where
+1 SIMPLE t2 range b b 5 NULL 15 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` in (7,8,9))
explain partitions select * from t2 where b in (7,8,9);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
+1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 15 Using where
explain extended select * from t2 where b > 5;
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 ALL b NULL NULL NULL 910 44.84 Using where
+1 SIMPLE t2 range b b 5 NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` > 5)
explain partitions select * from t2 where b > 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
+1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 5 Using where
explain extended select * from t2 where b > 5 and b < 8;
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 ALL b NULL NULL NULL 910 22.09 Using where
+1 SIMPLE t2 range b b 5 NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where ((`test`.`t2`.`b` > 5) and (`test`.`t2`.`b` < 8))
explain partitions select * from t2 where b > 5 and b < 8;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
+1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 5 Using where
explain extended select * from t2 where b > 5 and b < 7;
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 range b b 5 NULL 76 100.00 Using where
+1 SIMPLE t2 range b b 5 NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where ((`test`.`t2`.`b` > 5) and (`test`.`t2`.`b` < 7))
explain partitions select * from t2 where b > 5 and b < 7;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 76 Using where
+1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 5 Using where
explain extended select * from t2 where b > 0 and b < 5;
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 SIMPLE t2 ALL b NULL NULL NULL 910 41.65 Using where
+1 SIMPLE t2 range b b 5 NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where ((`test`.`t2`.`b` > 0) and (`test`.`t2`.`b` < 5))
explain partitions select * from t2 where b > 0 and b < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
+1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 5 Using where
flush status;
update t2 set a = 111 where b = 10;
show status like 'Handler_read_rnd_next';
@@ -2944,10 +2944,10 @@
update t2 set a = 111 where b in (5,6);
show status like 'Handler_read_rnd_next';
Variable_name Value
-Handler_read_rnd_next 915
+Handler_read_rnd_next 0
show status like 'Handler_read_key';
Variable_name Value
-Handler_read_key 0
+Handler_read_key 10
flush status;
update t2 set a = 222 where b = 7;
show status like 'Handler_read_rnd_next';
@@ -2968,36 +2968,36 @@
delete from t2 where b > 5;
show status like 'Handler_read_rnd_next';
Variable_name Value
-Handler_read_rnd_next 815
+Handler_read_rnd_next 0
show status like 'Handler_read_rnd_deleted';
Variable_name Value
-Handler_read_rnd_deleted 400
+Handler_read_rnd_deleted 0
show status like 'Handler_read_key';
Variable_name Value
-Handler_read_key 0
+Handler_read_key 5
show status like 'Handler_read_prev';
Variable_name Value
Handler_read_prev 0
show status like 'Handler_read_next';
Variable_name Value
-Handler_read_next 0
+Handler_read_next 300
flush status;
delete from t2 where b < 5 or b > 3;
show status like 'Handler_read_rnd_next';
Variable_name Value
-Handler_read_rnd_next 515
+Handler_read_rnd_next 0
show status like 'Handler_read_rnd_deleted';
Variable_name Value
-Handler_read_rnd_deleted 700
+Handler_read_rnd_deleted 0
show status like 'Handler_read_key';
Variable_name Value
-Handler_read_key 0
+Handler_read_key 5
show status like 'Handler_read_prev';
Variable_name Value
Handler_read_prev 0
show status like 'Handler_read_next';
Variable_name Value
-Handler_read_next 0
+Handler_read_next 510
drop table t1, t2;
create table t1 ( f_int1 mediumint, f_int2 integer)
partition by list(mod(f_int1,4)) (
@@ -3032,7 +3032,7 @@
NULL
explain partitions select * from t1 where f_int1 is null;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 part4_part4sp0 system NULL NULL NULL NULL 1
+1 SIMPLE t1 part4_part4sp0 ALL NULL NULL NULL NULL 2 Using where
drop table t1;
create table t1 (a int not null, b int not null)
partition by list(a)
@@ -3061,10 +3061,10 @@
(2,1),(2,2),(2,3),(2,4), (NULL,1);
explain partitions select * from t1 where a IS NULL AND (b=1 OR b=2);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pn_pnsp0,pn_pnsp1 system NULL NULL NULL NULL 1
+1 SIMPLE t1 pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where (a IS NULL or a < 1) AND (b=1 OR b=2);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 pn_pnsp0,pn_pnsp1 system NULL NULL NULL NULL 1
+1 SIMPLE t1 pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where (a IS NULL or a < 2) AND (b=1 OR b=2);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0_p0sp0,p0_p0sp1,pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 5 Using where
@@ -3093,7 +3093,7 @@
1
explain partitions select count(*) from t1 where s1 < 0 or s1 is null;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p3 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p3 ALL NULL NULL NULL NULL 2 Using where
drop table t1;
create table t1 (a char(32) primary key)
partition by key()
@@ -3136,7 +3136,7 @@
create table t1 (s1 int);
explain partitions select 1 from t1 union all select 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 NULL system NULL NULL NULL NULL 0 const row not found
+1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 0
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> NULL ALL NULL NULL NULL NULL NULL
drop table t1;
@@ -3152,7 +3152,7 @@
insert into t1 values (18446744073709551614-1);
explain partitions select * from t1 where a < 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0 system NULL NULL NULL NULL 1
+1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1
where a >= 18446744073709551000-1 and a <= 18446744073709551000+1;
id select_type table partitions type possible_keys key key_len ref rows Extra
@@ -3169,7 +3169,7 @@
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a = 18446744073709551614;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
drop table t1;
create table t1 (a int)
partition by range(a) (
@@ -3199,10 +3199,10 @@
1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a > 0xFE AND a <= 0xFF;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t2 where a > 0xFE AND a <= 0xFF;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t2 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t1 where a >= 0xFE AND a <= 0xFF;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 2 Using where
@@ -3238,7 +3238,7 @@
explain partitions select * from t1 where
a > 0xFFFFFFFFFFFFFFEC and a < 0xFFFFFFFFFFFFFFEE;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 Using where
explain partitions select * from t1 where a>=0 and a <= 0xFFFFFFFFFFFFFFFF;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2,p3,p4 ALL NULL NULL NULL NULL 8 Using where
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