mirror of
https://github.com/postgres/postgres.git
synced 2025-07-11 10:01:57 +03:00
Make bit and bit varying types reject too long input. (They already tried
to do that, but inconsistently.) Make bit type reject too short input, too, per SQL. Since it no longer zero pads, 'zpbit*' has been renamed to 'bit*' in the source, hence initdb.
This commit is contained in:
Peter Eisentraut
@ -4,23 +4,23 @@
|
||||
--
|
||||
-- Build tables for testing
|
||||
--
|
||||
CREATE TABLE ZPBIT_TABLE(b BIT(11));
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'0');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'11011');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'01010101010');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'101011111010'); -- too long
|
||||
--INSERT INTO ZPBIT_TABLE VALUES ('X554');
|
||||
--INSERT INTO ZPBIT_TABLE VALUES ('X555');
|
||||
SELECT * FROM ZPBIT_TABLE;
|
||||
CREATE TABLE BIT_TABLE(b BIT(11));
|
||||
INSERT INTO BIT_TABLE VALUES (B'10'); -- too short
|
||||
ERROR: bit string length does not match type bit(11)
|
||||
INSERT INTO BIT_TABLE VALUES (B'00000000000');
|
||||
INSERT INTO BIT_TABLE VALUES (B'11011000000');
|
||||
INSERT INTO BIT_TABLE VALUES (B'01010101010');
|
||||
INSERT INTO BIT_TABLE VALUES (B'101011111010'); -- too long
|
||||
ERROR: bit string length does not match type bit(11)
|
||||
--INSERT INTO BIT_TABLE VALUES ('X554');
|
||||
--INSERT INTO BIT_TABLE VALUES ('X555');
|
||||
SELECT * FROM BIT_TABLE;
|
||||
b
|
||||
-------------
|
||||
00000000000
|
||||
00000000000
|
||||
11011000000
|
||||
01010101010
|
||||
10101111101
|
||||
(5 rows)
|
||||
(3 rows)
|
||||
|
||||
CREATE TABLE VARBIT_TABLE(v BIT VARYING(11));
|
||||
INSERT INTO VARBIT_TABLE VALUES (B'');
|
||||
@ -28,6 +28,7 @@ INSERT INTO VARBIT_TABLE VALUES (B'0');
|
||||
INSERT INTO VARBIT_TABLE VALUES (B'010101');
|
||||
INSERT INTO VARBIT_TABLE VALUES (B'01010101010');
|
||||
INSERT INTO VARBIT_TABLE VALUES (B'101011111010'); -- too long
|
||||
ERROR: bit string too long for type bit varying(11)
|
||||
--INSERT INTO VARBIT_TABLE VALUES ('X554');
|
||||
--INSERT INTO VARBIT_TABLE VALUES ('X555');
|
||||
SELECT * FROM VARBIT_TABLE;
|
||||
@ -37,53 +38,37 @@ SELECT * FROM VARBIT_TABLE;
|
||||
0
|
||||
010101
|
||||
01010101010
|
||||
10101111101
|
||||
(5 rows)
|
||||
(4 rows)
|
||||
|
||||
-- Concatenation
|
||||
SELECT v, b, (v || b) AS concat
|
||||
FROM ZPBIT_TABLE, VARBIT_TABLE
|
||||
FROM BIT_TABLE, VARBIT_TABLE
|
||||
ORDER BY 3;
|
||||
v | b | concat
|
||||
-------------+-------------+------------------------
|
||||
| 00000000000 | 00000000000
|
||||
| 00000000000 | 00000000000
|
||||
0 | 00000000000 | 000000000000
|
||||
0 | 00000000000 | 000000000000
|
||||
0 | 01010101010 | 001010101010
|
||||
010101 | 00000000000 | 01010100000000000
|
||||
010101 | 00000000000 | 01010100000000000
|
||||
| 01010101010 | 01010101010
|
||||
01010101010 | 00000000000 | 0101010101000000000000
|
||||
01010101010 | 00000000000 | 0101010101000000000000
|
||||
01010101010 | 01010101010 | 0101010101001010101010
|
||||
010101 | 01010101010 | 01010101010101010
|
||||
01010101010 | 10101111101 | 0101010101010101111101
|
||||
01010101010 | 11011000000 | 0101010101011011000000
|
||||
010101 | 10101111101 | 01010110101111101
|
||||
010101 | 11011000000 | 01010111011000000
|
||||
0 | 10101111101 | 010101111101
|
||||
0 | 11011000000 | 011011000000
|
||||
| 10101111101 | 10101111101
|
||||
10101111101 | 00000000000 | 1010111110100000000000
|
||||
10101111101 | 00000000000 | 1010111110100000000000
|
||||
10101111101 | 01010101010 | 1010111110101010101010
|
||||
10101111101 | 10101111101 | 1010111110110101111101
|
||||
10101111101 | 11011000000 | 1010111110111011000000
|
||||
| 11011000000 | 11011000000
|
||||
(25 rows)
|
||||
(12 rows)
|
||||
|
||||
-- Length
|
||||
SELECT b, length(b) AS lb
|
||||
FROM ZPBIT_TABLE;
|
||||
FROM BIT_TABLE;
|
||||
b | lb
|
||||
-------------+----
|
||||
00000000000 | 11
|
||||
00000000000 | 11
|
||||
11011000000 | 11
|
||||
01010101010 | 11
|
||||
10101111101 | 11
|
||||
(5 rows)
|
||||
(3 rows)
|
||||
|
||||
SELECT v, length(v) AS lv
|
||||
FROM VARBIT_TABLE;
|
||||
@ -93,23 +78,20 @@ SELECT v, length(v) AS lv
|
||||
0 | 1
|
||||
010101 | 6
|
||||
01010101010 | 11
|
||||
10101111101 | 11
|
||||
(5 rows)
|
||||
(4 rows)
|
||||
|
||||
-- Substring
|
||||
SELECT b,
|
||||
SUBSTRING(b FROM 2 FOR 4) AS sub_2_4,
|
||||
SUBSTRING(b FROM 7 FOR 13) AS sub_7_13,
|
||||
SUBSTRING(b FROM 6) AS sub_6
|
||||
FROM ZPBIT_TABLE;
|
||||
FROM BIT_TABLE;
|
||||
b | sub_2_4 | sub_7_13 | sub_6
|
||||
-------------+---------+----------+--------
|
||||
00000000000 | 0000 | 00000 | 000000
|
||||
00000000000 | 0000 | 00000 | 000000
|
||||
11011000000 | 1011 | 00000 | 000000
|
||||
01010101010 | 1010 | 01010 | 101010
|
||||
10101111101 | 0101 | 11101 | 111101
|
||||
(5 rows)
|
||||
(3 rows)
|
||||
|
||||
SELECT v,
|
||||
SUBSTRING(v FROM 2 FOR 4) AS sub_2_4,
|
||||
@ -122,8 +104,7 @@ SELECT v,
|
||||
0 | | |
|
||||
010101 | 1010 | | 1
|
||||
01010101010 | 1010 | 01010 | 101010
|
||||
10101111101 | 0101 | 11101 | 111101
|
||||
(5 rows)
|
||||
(4 rows)
|
||||
|
||||
--- Bit operations
|
||||
DROP TABLE varbit_table;
|
||||
@ -178,11 +159,11 @@ SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM varbit_table;
|
||||
|
||||
DROP TABLE varbit_table;
|
||||
--- Bit operations
|
||||
DROP TABLE zpbit_table;
|
||||
CREATE TABLE zpbit_table (a BIT(16), b BIT(16));
|
||||
COPY zpbit_table FROM stdin;
|
||||
DROP TABLE bit_table;
|
||||
CREATE TABLE bit_table (a BIT(16), b BIT(16));
|
||||
COPY bit_table FROM stdin;
|
||||
SELECT a,b,~a AS "~ a",a & b AS "a & b",
|
||||
a|b AS "a | b", a # b AS "a # b" FROM zpbit_table;
|
||||
a|b AS "a | b", a # b AS "a # b" FROM bit_table;
|
||||
a | b | ~ a | a & b | a | b | a # b
|
||||
------------------+------------------+------------------+------------------+------------------+------------------
|
||||
0000111100000000 | 0001000000000000 | 1111000011111111 | 0000000000000000 | 0001111100000000 | 0001111100000000
|
||||
@ -198,7 +179,7 @@ SELECT a,b,~a AS "~ a",a & b AS "a & b",
|
||||
(10 rows)
|
||||
|
||||
SELECT a,b,a<b AS "a<b",a<=b AS "a<=b",a=b AS "a=b",
|
||||
a>=b AS "a>=b",a>b AS "a>b",a<>b AS "a<>b" FROM zpbit_table;
|
||||
a>=b AS "a>=b",a>b AS "a>b",a<>b AS "a<>b" FROM bit_table;
|
||||
a | b | a<b | a<=b | a=b | a>=b | a>b | a<>b
|
||||
------------------+------------------+-----+------+-----+------+-----+------
|
||||
0000111100000000 | 0001000000000000 | t | t | f | f | f | t
|
||||
@ -213,7 +194,7 @@ SELECT a,b,a<b AS "a<b",a<=b AS "a<=b",a=b AS "a=b",
|
||||
0001001000110100 | 1111111111110101 | t | t | f | f | f | t
|
||||
(10 rows)
|
||||
|
||||
SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM zpbit_table;
|
||||
SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM bit_table;
|
||||
a | a<<4 | b | b>>2
|
||||
------------------+------------------+------------------+------------------
|
||||
0000111100000000 | 1111000000000000 | 0001000000000000 | 0000010000000000
|
||||
@ -228,14 +209,14 @@ SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM zpbit_table;
|
||||
0001001000110100 | 0010001101000000 | 1111111111110101 | 0011111111111101
|
||||
(10 rows)
|
||||
|
||||
DROP TABLE zpbit_table;
|
||||
DROP TABLE bit_table;
|
||||
-- The following should fail
|
||||
select B'001' & B'10';
|
||||
ERROR: bitand: Cannot AND bitstrings of different sizes
|
||||
ERROR: cannot AND bit strings of different sizes
|
||||
select B'0111' | B'011';
|
||||
ERROR: bitor: Cannot OR bitstrings of different sizes
|
||||
ERROR: cannot OR bit strings of different sizes
|
||||
select B'0010' # B'011101';
|
||||
ERROR: bitxor: Cannot XOR bitstrings of different sizes
|
||||
ERROR: cannot XOR bit strings of different sizes
|
||||
-- More position tests, checking all the boundary cases
|
||||
SELECT POSITION(B'1010' IN B'0000101'); -- 0
|
||||
position
|
||||
@ -466,16 +447,16 @@ SELECT POSITION(B'0000000000011101011111010110' IN B'000000000011101011111010110
|
||||
(1 row)
|
||||
|
||||
-- Shifting
|
||||
CREATE TABLE ZPBIT_SHIFT_TABLE(b BIT(16));
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE VALUES (B'11011');
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>1 FROM ZPBIT_SHIFT_TABLE;
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>2 FROM ZPBIT_SHIFT_TABLE;
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>4 FROM ZPBIT_SHIFT_TABLE;
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>8 FROM ZPBIT_SHIFT_TABLE;
|
||||
SELECT POSITION(B'1101'IN b),
|
||||
CREATE TABLE BIT_SHIFT_TABLE(b BIT(16));
|
||||
INSERT INTO BIT_SHIFT_TABLE VALUES (B'1101100000000000');
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>1 FROM BIT_SHIFT_TABLE;
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>2 FROM BIT_SHIFT_TABLE;
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>4 FROM BIT_SHIFT_TABLE;
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>8 FROM BIT_SHIFT_TABLE;
|
||||
SELECT POSITION(B'1101' IN b),
|
||||
POSITION(B'11011' IN b),
|
||||
b
|
||||
FROM ZPBIT_SHIFT_TABLE ;
|
||||
FROM BIT_SHIFT_TABLE ;
|
||||
position | position | b
|
||||
----------+----------+------------------
|
||||
1 | 1 | 1101100000000000
|
||||
@ -496,35 +477,35 @@ SELECT POSITION(B'1101'IN b),
|
||||
0 | 0 | 0000000000000001
|
||||
(16 rows)
|
||||
|
||||
CREATE TABLE VARBIT_SHIFT_TABLE(v BIT VARYING(18));
|
||||
CREATE TABLE VARBIT_SHIFT_TABLE(v BIT VARYING(20));
|
||||
INSERT INTO VARBIT_SHIFT_TABLE VALUES (B'11011');
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(6)) >>1 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(8)) >>2 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(12)) >>4 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(20)) >>8 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'0' AS BIT VARYING(6)) >>1 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'00' AS BIT VARYING(8)) >>2 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'0000' AS BIT VARYING(12)) >>4 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'00000000' AS BIT VARYING(20)) >>8 FROM VARBIT_SHIFT_TABLE;
|
||||
SELECT POSITION(B'1101' IN v),
|
||||
POSITION(B'11011' IN v),
|
||||
v
|
||||
FROM VARBIT_SHIFT_TABLE ;
|
||||
position | position | v
|
||||
----------+----------+--------------------
|
||||
position | position | v
|
||||
----------+----------+----------------------
|
||||
1 | 1 | 11011
|
||||
2 | 2 | 011011
|
||||
3 | 3 | 00110110
|
||||
3 | 3 | 0011011
|
||||
4 | 4 | 00011011
|
||||
5 | 5 | 000011011000
|
||||
6 | 6 | 000001101100
|
||||
7 | 7 | 000000110110
|
||||
5 | 5 | 000011011
|
||||
6 | 6 | 0000011011
|
||||
7 | 7 | 00000011011
|
||||
8 | 8 | 000000011011
|
||||
9 | 9 | 000000001101100000
|
||||
10 | 10 | 000000000110110000
|
||||
11 | 11 | 000000000011011000
|
||||
12 | 12 | 000000000001101100
|
||||
13 | 13 | 000000000000110110
|
||||
9 | 9 | 0000000011011
|
||||
10 | 10 | 00000000011011
|
||||
11 | 11 | 000000000011011
|
||||
12 | 12 | 0000000000011011
|
||||
13 | 13 | 00000000000011011
|
||||
14 | 14 | 000000000000011011
|
||||
15 | 0 | 000000000000001101
|
||||
0 | 0 | 000000000000000110
|
||||
15 | 15 | 0000000000000011011
|
||||
16 | 16 | 00000000000000011011
|
||||
(16 rows)
|
||||
|
||||
DROP TABLE ZPBIT_SHIFT_TABLE;
|
||||
DROP TABLE BIT_SHIFT_TABLE;
|
||||
DROP TABLE VARBIT_SHIFT_TABLE;
|
||||
|
||||
@ -6,17 +6,17 @@
|
||||
-- Build tables for testing
|
||||
--
|
||||
|
||||
CREATE TABLE ZPBIT_TABLE(b BIT(11));
|
||||
CREATE TABLE BIT_TABLE(b BIT(11));
|
||||
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'0');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'11011');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'01010101010');
|
||||
INSERT INTO ZPBIT_TABLE VALUES (B'101011111010'); -- too long
|
||||
--INSERT INTO ZPBIT_TABLE VALUES ('X554');
|
||||
--INSERT INTO ZPBIT_TABLE VALUES ('X555');
|
||||
INSERT INTO BIT_TABLE VALUES (B'10'); -- too short
|
||||
INSERT INTO BIT_TABLE VALUES (B'00000000000');
|
||||
INSERT INTO BIT_TABLE VALUES (B'11011000000');
|
||||
INSERT INTO BIT_TABLE VALUES (B'01010101010');
|
||||
INSERT INTO BIT_TABLE VALUES (B'101011111010'); -- too long
|
||||
--INSERT INTO BIT_TABLE VALUES ('X554');
|
||||
--INSERT INTO BIT_TABLE VALUES ('X555');
|
||||
|
||||
SELECT * FROM ZPBIT_TABLE;
|
||||
SELECT * FROM BIT_TABLE;
|
||||
|
||||
CREATE TABLE VARBIT_TABLE(v BIT VARYING(11));
|
||||
|
||||
@ -32,12 +32,12 @@ SELECT * FROM VARBIT_TABLE;
|
||||
|
||||
-- Concatenation
|
||||
SELECT v, b, (v || b) AS concat
|
||||
FROM ZPBIT_TABLE, VARBIT_TABLE
|
||||
FROM BIT_TABLE, VARBIT_TABLE
|
||||
ORDER BY 3;
|
||||
|
||||
-- Length
|
||||
SELECT b, length(b) AS lb
|
||||
FROM ZPBIT_TABLE;
|
||||
FROM BIT_TABLE;
|
||||
SELECT v, length(v) AS lv
|
||||
FROM VARBIT_TABLE;
|
||||
|
||||
@ -46,7 +46,7 @@ SELECT b,
|
||||
SUBSTRING(b FROM 2 FOR 4) AS sub_2_4,
|
||||
SUBSTRING(b FROM 7 FOR 13) AS sub_7_13,
|
||||
SUBSTRING(b FROM 6) AS sub_6
|
||||
FROM ZPBIT_TABLE;
|
||||
FROM BIT_TABLE;
|
||||
SELECT v,
|
||||
SUBSTRING(v FROM 2 FOR 4) AS sub_2_4,
|
||||
SUBSTRING(v FROM 7 FOR 13) AS sub_7_13,
|
||||
@ -78,14 +78,14 @@ SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM varbit_table;
|
||||
DROP TABLE varbit_table;
|
||||
|
||||
--- Bit operations
|
||||
DROP TABLE zpbit_table;
|
||||
CREATE TABLE zpbit_table (a BIT(16), b BIT(16));
|
||||
COPY zpbit_table FROM stdin;
|
||||
X0F X10
|
||||
X1F X11
|
||||
X2F X12
|
||||
X3F X13
|
||||
X8F X04
|
||||
DROP TABLE bit_table;
|
||||
CREATE TABLE bit_table (a BIT(16), b BIT(16));
|
||||
COPY bit_table FROM stdin;
|
||||
X0F00 X1000
|
||||
X1F00 X1100
|
||||
X2F00 X1200
|
||||
X3F00 X1300
|
||||
X8F00 X0400
|
||||
X000F X0010
|
||||
X0123 XFFFF
|
||||
X2468 X2468
|
||||
@ -94,12 +94,12 @@ X1234 XFFF5
|
||||
\.
|
||||
|
||||
SELECT a,b,~a AS "~ a",a & b AS "a & b",
|
||||
a|b AS "a | b", a # b AS "a # b" FROM zpbit_table;
|
||||
a|b AS "a | b", a # b AS "a # b" FROM bit_table;
|
||||
SELECT a,b,a<b AS "a<b",a<=b AS "a<=b",a=b AS "a=b",
|
||||
a>=b AS "a>=b",a>b AS "a>b",a<>b AS "a<>b" FROM zpbit_table;
|
||||
SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM zpbit_table;
|
||||
a>=b AS "a>=b",a>b AS "a>b",a<>b AS "a<>b" FROM bit_table;
|
||||
SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM bit_table;
|
||||
|
||||
DROP TABLE zpbit_table;
|
||||
DROP TABLE bit_table;
|
||||
|
||||
|
||||
-- The following should fail
|
||||
@ -158,29 +158,29 @@ SELECT POSITION(B'0000000000011101011111010110' IN B'000000000011101011111010110
|
||||
|
||||
-- Shifting
|
||||
|
||||
CREATE TABLE ZPBIT_SHIFT_TABLE(b BIT(16));
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE VALUES (B'11011');
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>1 FROM ZPBIT_SHIFT_TABLE;
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>2 FROM ZPBIT_SHIFT_TABLE;
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>4 FROM ZPBIT_SHIFT_TABLE;
|
||||
INSERT INTO ZPBIT_SHIFT_TABLE SELECT b>>8 FROM ZPBIT_SHIFT_TABLE;
|
||||
SELECT POSITION(B'1101'IN b),
|
||||
CREATE TABLE BIT_SHIFT_TABLE(b BIT(16));
|
||||
INSERT INTO BIT_SHIFT_TABLE VALUES (B'1101100000000000');
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>1 FROM BIT_SHIFT_TABLE;
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>2 FROM BIT_SHIFT_TABLE;
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>4 FROM BIT_SHIFT_TABLE;
|
||||
INSERT INTO BIT_SHIFT_TABLE SELECT b>>8 FROM BIT_SHIFT_TABLE;
|
||||
SELECT POSITION(B'1101' IN b),
|
||||
POSITION(B'11011' IN b),
|
||||
b
|
||||
FROM ZPBIT_SHIFT_TABLE ;
|
||||
FROM BIT_SHIFT_TABLE ;
|
||||
|
||||
|
||||
CREATE TABLE VARBIT_SHIFT_TABLE(v BIT VARYING(18));
|
||||
CREATE TABLE VARBIT_SHIFT_TABLE(v BIT VARYING(20));
|
||||
INSERT INTO VARBIT_SHIFT_TABLE VALUES (B'11011');
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(6)) >>1 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(8)) >>2 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(12)) >>4 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v AS BIT(20)) >>8 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'0' AS BIT VARYING(6)) >>1 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'00' AS BIT VARYING(8)) >>2 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'0000' AS BIT VARYING(12)) >>4 FROM VARBIT_SHIFT_TABLE;
|
||||
INSERT INTO VARBIT_SHIFT_TABLE SELECT CAST(v || B'00000000' AS BIT VARYING(20)) >>8 FROM VARBIT_SHIFT_TABLE;
|
||||
SELECT POSITION(B'1101' IN v),
|
||||
POSITION(B'11011' IN v),
|
||||
v
|
||||
FROM VARBIT_SHIFT_TABLE ;
|
||||
|
||||
|
||||
DROP TABLE ZPBIT_SHIFT_TABLE;
|
||||
DROP TABLE BIT_SHIFT_TABLE;
|
||||
DROP TABLE VARBIT_SHIFT_TABLE;
|
||||
|
||||
Reference in New Issue
Block a user