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72 lines
2.9 KiB
Plaintext
72 lines
2.9 KiB
Plaintext
SET sql_mode=ORACLE;
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#
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# MDEV-15739 - sql_mode=ORACLE: Make LPAD and RPAD return NULL instead of empty string
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#
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SELECT RPAD('a',0), RPAD('abc',1), RPAD('abc',2) ;
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RPAD('a',0) RPAD('abc',1) RPAD('abc',2)
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NULL a ab
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SELECT RPAD('a',0,'.'), RPAD('abc',1,'.'), RPAD('abc',2,'.') ;
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RPAD('a',0,'.') RPAD('abc',1,'.') RPAD('abc',2,'.')
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NULL a ab
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SELECT LPAD('a',0), LPAD('abc',1), LPAD('abc',2) ;
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LPAD('a',0) LPAD('abc',1) LPAD('abc',2)
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NULL a ab
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SELECT LPAD('a',0,'.'), LPAD('abc',1,'.'), LPAD('abc',2,'.') ;
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LPAD('a',0,'.') LPAD('abc',1,'.') LPAD('abc',2,'.')
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NULL a ab
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CREATE TABLE t1 (c1 VARCHAR(10),c2 INTEGER, c3 VARCHAR(10), ord INTEGER);
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INSERT INTO t1 VALUES ('a',1,null,1);
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INSERT INTO t1 VALUES ('a',null,'.',2);
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INSERT INTO t1 VALUES (null,1,'.',3);
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INSERT INTO t1 VALUES ('a',-1,'.',4);
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INSERT INTO t1 VALUES ('a',0,'.',5);
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INSERT INTO t1 VALUES ('a',1,'.',6);
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INSERT INTO t1 VALUES ('a',2,'.',7);
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SELECT LPAD(c1,c2,c3), LPAD(c1,c2) FROM t1 ORDER BY ord;
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LPAD(c1,c2,c3) LPAD(c1,c2)
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NULL a
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NULL NULL
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NULL NULL
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NULL NULL
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NULL NULL
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a a
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.a a
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SELECT RPAD(c1,c2,c3), RPAD(c1,c2) FROM t1 ORDER BY ord;
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RPAD(c1,c2,c3) RPAD(c1,c2)
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NULL a
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NULL NULL
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NULL NULL
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NULL NULL
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NULL NULL
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a a
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a. a
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EXPLAIN EXTENDED SELECT RPAD('a',0,'.'), LPAD('a',0,'.'), LPAD(c1,c2,c3), LPAD(c1,c2), RPAD(c1,c2,c3), RPAD(c1,c2) FROM t1 ORDER BY ord;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 7 100.00 Using filesort
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Warnings:
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Note 1003 select rpad_oracle('a',0,'.') AS "RPAD('a',0,'.')",lpad_oracle('a',0,'.') AS "LPAD('a',0,'.')",lpad_oracle("test"."t1"."c1","test"."t1"."c2","test"."t1"."c3") AS "LPAD(c1,c2,c3)",lpad_oracle("test"."t1"."c1","test"."t1"."c2") AS "LPAD(c1,c2)",rpad_oracle("test"."t1"."c1","test"."t1"."c2","test"."t1"."c3") AS "RPAD(c1,c2,c3)",rpad_oracle("test"."t1"."c1","test"."t1"."c2") AS "RPAD(c1,c2)" from "test"."t1" order by "test"."t1"."ord"
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CREATE VIEW v1 AS SELECT RPAD('a',0,'.') AS "C1", LPAD('a',0,'.') AS "C2", LPAD(c1,c2,c3) AS "C3", LPAD(c1,c2) AS "C4", RPAD(c1,c2,c3) AS "C5", RPAD(c1,c2) AS "C6" FROM t1 ORDER BY ord;
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SHOW CREATE VIEW v1;
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View Create View character_set_client collation_connection
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v1 CREATE VIEW "v1" AS select rpad_oracle('a',0,'.') AS "C1",lpad_oracle('a',0,'.') AS "C2",lpad_oracle("t1"."c1","t1"."c2","t1"."c3") AS "C3",lpad_oracle("t1"."c1","t1"."c2") AS "C4",rpad_oracle("t1"."c1","t1"."c2","t1"."c3") AS "C5",rpad_oracle("t1"."c1","t1"."c2") AS "C6" from "t1" order by "t1"."ord" latin1 latin1_swedish_ci
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SELECT * FROM v1;
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C1 C2 C3 C4 C5 C6
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NULL NULL NULL a NULL a
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NULL NULL NULL NULL NULL NULL
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NULL NULL NULL NULL NULL NULL
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NULL NULL NULL NULL NULL NULL
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NULL NULL NULL NULL NULL NULL
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NULL NULL a a a a
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NULL NULL .a a a. a
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SELECT c1||'-'||c2||'-'||c3||'-'||c4||'-'||c5||'-'||c6 FROM v1;
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c1||'-'||c2||'-'||c3||'-'||c4||'-'||c5||'-'||c6
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---a--a
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-----
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-----
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-----
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-----
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--a-a-a-a
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--.a- a-a.-a
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DROP VIEW v1;
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DROP TABLE t1;
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