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|
--
-- BIT types
--
--
-- Build tables for testing
--
CREATE TABLE BIT_TABLE(b BIT(11));
INSERT INTO BIT_TABLE VALUES (B'00000000000');
INSERT INTO BIT_TABLE VALUES (B'11011000000');
INSERT INTO BIT_TABLE VALUES (B'01010101010');
CREATE TABLE VARBIT_TABLE(v BIT VARYING(11));
INSERT INTO VARBIT_TABLE VALUES (B'');
INSERT INTO VARBIT_TABLE VALUES (B'0');
INSERT INTO VARBIT_TABLE VALUES (B'010101');
INSERT INTO VARBIT_TABLE VALUES (B'01010101010');
-- test overflow cases
SELECT SUBSTRING('01010101'::bit(8) FROM 2 FOR 2147483646) AS "1010101";
1010101
---------
1010101
(1 row)
SELECT SUBSTRING('01010101'::bit(8) FROM -10 FOR 2147483646) AS "01010101";
01010101
----------
01010101
(1 row)
SELECT SUBSTRING('01010101'::bit(8) FROM -10 FOR -2147483646) AS "error";
ERROR: negative substring length not allowed
SELECT SUBSTRING('01010101'::varbit FROM 2 FOR 2147483646) AS "1010101";
1010101
---------
1010101
(1 row)
SELECT SUBSTRING('01010101'::varbit FROM -10 FOR 2147483646) AS "01010101";
01010101
----------
01010101
(1 row)
SELECT SUBSTRING('01010101'::varbit FROM -10 FOR -2147483646) AS "error";
ERROR: negative substring length not allowed
CREATE TABLE varbit_table (a BIT VARYING(16), b BIT VARYING(16));
DROP TABLE varbit_table;
CREATE TABLE bit_table (a BIT(16), b BIT(16));
DROP TABLE bit_table;
-- The following should fail
select B'001' & B'10';
ERROR: cannot AND bit strings of different sizes
select B'0111' | B'011';
ERROR: cannot OR bit strings of different sizes
select B'0010' # B'011101';
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
----------
0
(1 row)
SELECT POSITION(B'1010' IN B'00001010'); -- 5
position
----------
5
(1 row)
SELECT POSITION(B'1010' IN B'00000101'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'1010' IN B'000001010'); -- 6
position
----------
6
(1 row)
SELECT POSITION(B'' IN B'00001010'); -- 1
position
----------
1
(1 row)
SELECT POSITION(B'0' IN B''); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'' IN B''); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'101101' IN B'001011011011011000'); -- 3
position
----------
3
(1 row)
SELECT POSITION(B'10110110' IN B'001011011011010'); -- 3
position
----------
3
(1 row)
SELECT POSITION(B'1011011011011' IN B'001011011011011'); -- 3
position
----------
3
(1 row)
SELECT POSITION(B'1011011011011' IN B'00001011011011011'); -- 5
position
----------
5
(1 row)
SELECT POSITION(B'11101011' IN B'11101011'); -- 1
position
----------
1
(1 row)
SELECT POSITION(B'11101011' IN B'011101011'); -- 2
position
----------
2
(1 row)
SELECT POSITION(B'11101011' IN B'00011101011'); -- 4
position
----------
4
(1 row)
SELECT POSITION(B'11101011' IN B'0000011101011'); -- 6
position
----------
6
(1 row)
SELECT POSITION(B'111010110' IN B'111010110'); -- 1
position
----------
1
(1 row)
SELECT POSITION(B'111010110' IN B'0111010110'); -- 2
position
----------
2
(1 row)
SELECT POSITION(B'111010110' IN B'000111010110'); -- 4
position
----------
4
(1 row)
SELECT POSITION(B'111010110' IN B'00000111010110'); -- 6
position
----------
6
(1 row)
SELECT POSITION(B'111010110' IN B'11101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'011101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'00011101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'0000011101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'111010110'); -- 1
position
----------
1
(1 row)
SELECT POSITION(B'111010110' IN B'0111010110'); -- 2
position
----------
2
(1 row)
SELECT POSITION(B'111010110' IN B'000111010110'); -- 4
position
----------
4
(1 row)
SELECT POSITION(B'111010110' IN B'00000111010110'); -- 6
position
----------
6
(1 row)
SELECT POSITION(B'111010110' IN B'000001110101111101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'0000001110101111101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'000000001110101111101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'00000000001110101111101011'); -- 0
position
----------
0
(1 row)
SELECT POSITION(B'111010110' IN B'0000011101011111010110'); -- 14
position
----------
14
(1 row)
SELECT POSITION(B'111010110' IN B'00000011101011111010110'); -- 15
position
----------
15
(1 row)
SELECT POSITION(B'111010110' IN B'0000000011101011111010110'); -- 17
position
----------
17
(1 row)
SELECT POSITION(B'111010110' IN B'000000000011101011111010110'); -- 19
position
----------
19
(1 row)
SELECT POSITION(B'000000000011101011111010110' IN B'000000000011101011111010110'); -- 1
position
----------
1
(1 row)
SELECT POSITION(B'00000000011101011111010110' IN B'000000000011101011111010110'); -- 2
position
----------
2
(1 row)
SELECT POSITION(B'0000000000011101011111010110' IN B'000000000011101011111010110'); -- 0
position
----------
0
(1 row)
-- Shifting
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 b, b >> 1 AS bsr, b << 1 AS bsl
FROM BIT_SHIFT_TABLE ;
b | bsr | bsl
------------------+------------------+------------------
1101100000000000 | 0110110000000000 | 1011000000000000
0110110000000000 | 0011011000000000 | 1101100000000000
0011011000000000 | 0001101100000000 | 0110110000000000
0001101100000000 | 0000110110000000 | 0011011000000000
0000110110000000 | 0000011011000000 | 0001101100000000
0000011011000000 | 0000001101100000 | 0000110110000000
0000001101100000 | 0000000110110000 | 0000011011000000
0000000110110000 | 0000000011011000 | 0000001101100000
0000000011011000 | 0000000001101100 | 0000000110110000
0000000001101100 | 0000000000110110 | 0000000011011000
0000000000110110 | 0000000000011011 | 0000000001101100
0000000000011011 | 0000000000001101 | 0000000000110110
0000000000001101 | 0000000000000110 | 0000000000011010
0000000000000110 | 0000000000000011 | 0000000000001100
0000000000000011 | 0000000000000001 | 0000000000000110
0000000000000001 | 0000000000000000 | 0000000000000010
(16 rows)
SELECT b, b >> 8 AS bsr8, b << 8 AS bsl8
FROM BIT_SHIFT_TABLE ;
b | bsr8 | bsl8
------------------+------------------+------------------
1101100000000000 | 0000000011011000 | 0000000000000000
0110110000000000 | 0000000001101100 | 0000000000000000
0011011000000000 | 0000000000110110 | 0000000000000000
0001101100000000 | 0000000000011011 | 0000000000000000
0000110110000000 | 0000000000001101 | 1000000000000000
0000011011000000 | 0000000000000110 | 1100000000000000
0000001101100000 | 0000000000000011 | 0110000000000000
0000000110110000 | 0000000000000001 | 1011000000000000
0000000011011000 | 0000000000000000 | 1101100000000000
0000000001101100 | 0000000000000000 | 0110110000000000
0000000000110110 | 0000000000000000 | 0011011000000000
0000000000011011 | 0000000000000000 | 0001101100000000
0000000000001101 | 0000000000000000 | 0000110100000000
0000000000000110 | 0000000000000000 | 0000011000000000
0000000000000011 | 0000000000000000 | 0000001100000000
0000000000000001 | 0000000000000000 | 0000000100000000
(16 rows)
SELECT b::bit(15), b::bit(15) >> 1 AS bsr, b::bit(15) << 1 AS bsl
FROM BIT_SHIFT_TABLE ;
b | bsr | bsl
-----------------+-----------------+-----------------
110110000000000 | 011011000000000 | 101100000000000
011011000000000 | 001101100000000 | 110110000000000
001101100000000 | 000110110000000 | 011011000000000
000110110000000 | 000011011000000 | 001101100000000
000011011000000 | 000001101100000 | 000110110000000
000001101100000 | 000000110110000 | 000011011000000
000000110110000 | 000000011011000 | 000001101100000
000000011011000 | 000000001101100 | 000000110110000
000000001101100 | 000000000110110 | 000000011011000
000000000110110 | 000000000011011 | 000000001101100
000000000011011 | 000000000001101 | 000000000110110
000000000001101 | 000000000000110 | 000000000011010
000000000000110 | 000000000000011 | 000000000001100
000000000000011 | 000000000000001 | 000000000000110
000000000000001 | 000000000000000 | 000000000000010
000000000000000 | 000000000000000 | 000000000000000
(16 rows)
SELECT b::bit(15), b::bit(15) >> 8 AS bsr8, b::bit(15) << 8 AS bsl8
FROM BIT_SHIFT_TABLE ;
b | bsr8 | bsl8
-----------------+-----------------+-----------------
110110000000000 | 000000001101100 | 000000000000000
011011000000000 | 000000000110110 | 000000000000000
001101100000000 | 000000000011011 | 000000000000000
000110110000000 | 000000000001101 | 000000000000000
000011011000000 | 000000000000110 | 100000000000000
000001101100000 | 000000000000011 | 110000000000000
000000110110000 | 000000000000001 | 011000000000000
000000011011000 | 000000000000000 | 101100000000000
000000001101100 | 000000000000000 | 110110000000000
000000000110110 | 000000000000000 | 011011000000000
000000000011011 | 000000000000000 | 001101100000000
000000000001101 | 000000000000000 | 000110100000000
000000000000110 | 000000000000000 | 000011000000000
000000000000011 | 000000000000000 | 000001100000000
000000000000001 | 000000000000000 | 000000100000000
000000000000000 | 000000000000000 | 000000000000000
(16 rows)
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 || 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 v, v >> 1 AS vsr, v << 1 AS vsl
FROM VARBIT_SHIFT_TABLE ;
v | vsr | vsl
----------------------+----------------------+----------------------
11011 | 01101 | 10110
011011 | 001101 | 110110
0011011 | 0001101 | 0110110
00011011 | 00001101 | 00110110
000011011 | 000001101 | 000110110
0000011011 | 0000001101 | 0000110110
00000011011 | 00000001101 | 00000110110
000000011011 | 000000001101 | 000000110110
0000000011011 | 0000000001101 | 0000000110110
00000000011011 | 00000000001101 | 00000000110110
000000000011011 | 000000000001101 | 000000000110110
0000000000011011 | 0000000000001101 | 0000000000110110
00000000000011011 | 00000000000001101 | 00000000000110110
000000000000011011 | 000000000000001101 | 000000000000110110
0000000000000011011 | 0000000000000001101 | 0000000000000110110
00000000000000011011 | 00000000000000001101 | 00000000000000110110
(16 rows)
SELECT v, v >> 8 AS vsr8, v << 8 AS vsl8
FROM VARBIT_SHIFT_TABLE ;
v | vsr8 | vsl8
----------------------+----------------------+----------------------
11011 | 00000 | 00000
011011 | 000000 | 000000
0011011 | 0000000 | 0000000
00011011 | 00000000 | 00000000
000011011 | 000000000 | 100000000
0000011011 | 0000000000 | 1100000000
00000011011 | 00000000000 | 01100000000
000000011011 | 000000000000 | 101100000000
0000000011011 | 0000000000000 | 1101100000000
00000000011011 | 00000000000000 | 01101100000000
000000000011011 | 000000000000000 | 001101100000000
0000000000011011 | 0000000000000000 | 0001101100000000
00000000000011011 | 00000000000000000 | 00001101100000000
000000000000011011 | 000000000000000000 | 000001101100000000
0000000000000011011 | 0000000000000000000 | 0000001101100000000
00000000000000011011 | 00000000000000000000 | 00000001101100000000
(16 rows)
DROP TABLE BIT_SHIFT_TABLE;
DROP TABLE VARBIT_SHIFT_TABLE;
-- Get/Set bit
SELECT get_bit(B'0101011000100', 10);
get_bit
---------
1
(1 row)
SELECT set_bit(B'0101011000100100', 15, 1);
set_bit
------------------
0101011000100101
(1 row)
SELECT set_bit(B'0101011000100100', 16, 1); -- fail
ERROR: bit index 16 out of valid range (0..15)
-- Overlay
SELECT overlay(B'0101011100' placing '001' from 2 for 3);
overlay
------------
0001011100
(1 row)
SELECT overlay(B'0101011100' placing '101' from 6);
overlay
------------
0101010100
(1 row)
SELECT overlay(B'0101011100' placing '001' from 11);
overlay
---------------
0101011100001
(1 row)
SELECT overlay(B'0101011100' placing '001' from 20);
overlay
---------------
0101011100001
(1 row)
-- bit_count
SELECT bit_count(B'0101011100'::bit(10));
bit_count
-----------
5
(1 row)
SELECT bit_count(B'1111111111'::bit(10));
bit_count
-----------
10
(1 row)
-- This table is intentionally left around to exercise pg_dump/pg_upgrade
CREATE TABLE bit_defaults(
b1 bit(4) DEFAULT '1001',
b2 bit(4) DEFAULT B'0101',
b3 bit varying(5) DEFAULT '1001',
b4 bit varying(5) DEFAULT B'0101'
);
|