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apache / cloudberry / refs/heads/cbdb-postgres-merge / . / src / test / regress / expected / bit.out
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--
-- BIT types
--
--
-- Build tables for testing
--
CREATE TABLE BIT_TABLE(b BIT(11));
INSERT INTO BIT_TABLE VALUES (B'10'); -- too short
ERROR: bit string length 2 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 12 does not match type bit(11)
--INSERT INTO BIT_TABLE VALUES ('X554');
--INSERT INTO BIT_TABLE VALUES ('X555');
SELECT * FROM BIT_TABLE;
b
-------------
00000000000
11011000000
01010101010
(3 rows)
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');
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;
v
-------------
0
010101
01010101010
(4 rows)
-- Literals with syntax errors
SELECT b' 0';
ERROR: " " is not a valid binary digit
LINE 1: SELECT b' 0';
^
SELECT b'0 ';
ERROR: " " is not a valid binary digit
LINE 1: SELECT b'0 ';
^
SELECT x' 0';
ERROR: " " is not a valid hexadecimal digit
LINE 1: SELECT x' 0';
^
SELECT x'0 ';
ERROR: " " is not a valid hexadecimal digit
LINE 1: SELECT x'0 ';
^
-- Concatenation
SELECT v, b, (v || b) AS concat
FROM BIT_TABLE, VARBIT_TABLE
ORDER BY 3;
v | b | concat
-------------+-------------+------------------------
| 00000000000 | 00000000000
0 | 00000000000 | 000000000000
0 | 01010101010 | 001010101010
010101 | 00000000000 | 01010100000000000
| 01010101010 | 01010101010
01010101010 | 00000000000 | 0101010101000000000000
01010101010 | 01010101010 | 0101010101001010101010
010101 | 01010101010 | 01010101010101010
01010101010 | 11011000000 | 0101010101011011000000
010101 | 11011000000 | 01010111011000000
0 | 11011000000 | 011011000000
| 11011000000 | 11011000000
(12 rows)
-- Length
SELECT b, length(b) AS lb
FROM BIT_TABLE;
b | lb
-------------+----
00000000000 | 11
11011000000 | 11
01010101010 | 11
(3 rows)
SELECT v, length(v) AS lv
FROM VARBIT_TABLE;
v | lv
-------------+----
| 0
0 | 1
010101 | 6
01010101010 | 11
(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 BIT_TABLE;
b | sub_2_4 | sub_7_13 | sub_6
-------------+---------+----------+--------
00000000000 | 0000 | 00000 | 000000
11011000000 | 1011 | 00000 | 000000
01010101010 | 1010 | 01010 | 101010
(3 rows)
SELECT v,
SUBSTRING(v FROM 2 FOR 4) AS sub_2_4,
SUBSTRING(v FROM 7 FOR 13) AS sub_7_13,
SUBSTRING(v FROM 6) AS sub_6
FROM VARBIT_TABLE;
v | sub_2_4 | sub_7_13 | sub_6
-------------+---------+----------+--------
| | |
0 | | |
010101 | 1010 | | 1
01010101010 | 1010 | 01010 | 101010
(4 rows)
-- 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
--- Bit operations
DROP TABLE varbit_table;
CREATE TABLE varbit_table (a BIT VARYING(16), b BIT VARYING(16));
COPY varbit_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 varbit_table;
a | b | ~ a | a & b | a | b | a # b
------------------+------------------+------------------+------------------+------------------+------------------
00001111 | 00010000 | 11110000 | 00000000 | 00011111 | 00011111
00011111 | 00010001 | 11100000 | 00010001 | 00011111 | 00001110
00101111 | 00010010 | 11010000 | 00000010 | 00111111 | 00111101
00111111 | 00010011 | 11000000 | 00010011 | 00111111 | 00101100
10001111 | 00000100 | 01110000 | 00000100 | 10001111 | 10001011
0000000000001111 | 0000000000010000 | 1111111111110000 | 0000000000000000 | 0000000000011111 | 0000000000011111
0000000100100011 | 1111111111111111 | 1111111011011100 | 0000000100100011 | 1111111111111111 | 1111111011011100
0010010001101000 | 0010010001101000 | 1101101110010111 | 0010010001101000 | 0010010001101000 | 0000000000000000
1111101001010000 | 0000010110101111 | 0000010110101111 | 0000000000000000 | 1111111111111111 | 1111111111111111
0001001000110100 | 1111111111110101 | 1110110111001011 | 0001001000110100 | 1111111111110101 | 1110110111000001
(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 varbit_table;
a | b | a<b | a<=b | a=b | a>=b | a>b | a<>b
------------------+------------------+-----+------+-----+------+-----+------
00001111 | 00010000 | t | t | f | f | f | t
00011111 | 00010001 | f | f | f | t | t | t
00101111 | 00010010 | f | f | f | t | t | t
00111111 | 00010011 | f | f | f | t | t | t
10001111 | 00000100 | f | f | f | t | t | t
0000000000001111 | 0000000000010000 | t | t | f | f | f | t
0000000100100011 | 1111111111111111 | t | t | f | f | f | t
0010010001101000 | 0010010001101000 | f | t | t | t | f | f
1111101001010000 | 0000010110101111 | f | f | f | t | t | t
0001001000110100 | 1111111111110101 | t | t | f | f | f | t
(10 rows)
SELECT a,a<<4 AS "a<<4",b,b>>2 AS "b>>2" FROM varbit_table;
a | a<<4 | b | b>>2
------------------+------------------+------------------+------------------
00001111 | 11110000 | 00010000 | 00000100
00011111 | 11110000 | 00010001 | 00000100
00101111 | 11110000 | 00010010 | 00000100
00111111 | 11110000 | 00010011 | 00000100
10001111 | 11110000 | 00000100 | 00000001
0000000000001111 | 0000000011110000 | 0000000000010000 | 0000000000000100
0000000100100011 | 0001001000110000 | 1111111111111111 | 0011111111111111
0010010001101000 | 0100011010000000 | 0010010001101000 | 0000100100011010
1111101001010000 | 1010010100000000 | 0000010110101111 | 0000000101101011
0001001000110100 | 0010001101000000 | 1111111111110101 | 0011111111111101
(10 rows)
DROP TABLE varbit_table;
--- Bit operations
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 bit_table;
a | b | ~ a | a & b | a | b | a # b
------------------+------------------+------------------+------------------+------------------+------------------
0000111100000000 | 0001000000000000 | 1111000011111111 | 0000000000000000 | 0001111100000000 | 0001111100000000
0001111100000000 | 0001000100000000 | 1110000011111111 | 0001000100000000 | 0001111100000000 | 0000111000000000
0010111100000000 | 0001001000000000 | 1101000011111111 | 0000001000000000 | 0011111100000000 | 0011110100000000
0011111100000000 | 0001001100000000 | 1100000011111111 | 0001001100000000 | 0011111100000000 | 0010110000000000
1000111100000000 | 0000010000000000 | 0111000011111111 | 0000010000000000 | 1000111100000000 | 1000101100000000
0000000000001111 | 0000000000010000 | 1111111111110000 | 0000000000000000 | 0000000000011111 | 0000000000011111
0000000100100011 | 1111111111111111 | 1111111011011100 | 0000000100100011 | 1111111111111111 | 1111111011011100
0010010001101000 | 0010010001101000 | 1101101110010111 | 0010010001101000 | 0010010001101000 | 0000000000000000
1111101001010000 | 0000010110101111 | 0000010110101111 | 0000000000000000 | 1111111111111111 | 1111111111111111
0001001000110100 | 1111111111110101 | 1110110111001011 | 0001001000110100 | 1111111111110101 | 1110110111000001
(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 bit_table;
a | b | a<b | a<=b | a=b | a>=b | a>b | a<>b
------------------+------------------+-----+------+-----+------+-----+------
0000111100000000 | 0001000000000000 | t | t | f | f | f | t
0001111100000000 | 0001000100000000 | f | f | f | t | t | t
0010111100000000 | 0001001000000000 | f | f | f | t | t | t
0011111100000000 | 0001001100000000 | f | f | f | t | t | t
1000111100000000 | 0000010000000000 | f | f | f | t | t | t
0000000000001111 | 0000000000010000 | t | t | f | f | f | t
0000000100100011 | 1111111111111111 | t | t | f | f | f | t
0010010001101000 | 0010010001101000 | f | t | t | t | f | f
1111101001010000 | 0000010110101111 | f | f | f | t | t | t
0001001000110100 | 1111111111110101 | t | t | f | f | f | t
(10 rows)
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
0001111100000000 | 1111000000000000 | 0001000100000000 | 0000010001000000
0010111100000000 | 1111000000000000 | 0001001000000000 | 0000010010000000
0011111100000000 | 1111000000000000 | 0001001100000000 | 0000010011000000
1000111100000000 | 1111000000000000 | 0000010000000000 | 0000000100000000
0000000000001111 | 0000000011110000 | 0000000000010000 | 0000000000000100
0000000100100011 | 0001001000110000 | 1111111111111111 | 0011111111111111
0010010001101000 | 0100011010000000 | 0010010001101000 | 0000100100011010
1111101001010000 | 1010010100000000 | 0000010110101111 | 0000000101101011
0001001000110100 | 0010001101000000 | 1111111111110101 | 0011111111111101
(10 rows)
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 POSITION(B'1101' IN b),
POSITION(B'11011' IN b),
b
FROM BIT_SHIFT_TABLE ;
position | position | b
----------+----------+------------------
1 | 1 | 1101100000000000
2 | 2 | 0110110000000000
3 | 3 | 0011011000000000
4 | 4 | 0001101100000000
5 | 5 | 0000110110000000
6 | 6 | 0000011011000000
7 | 7 | 0000001101100000
8 | 8 | 0000000110110000
9 | 9 | 0000000011011000
10 | 10 | 0000000001101100
11 | 11 | 0000000000110110
12 | 12 | 0000000000011011
13 | 0 | 0000000000001101
0 | 0 | 0000000000000110
0 | 0 | 0000000000000011
0 | 0 | 0000000000000001
(16 rows)
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 POSITION(B'1101' IN v),
POSITION(B'11011' IN v),
v
FROM VARBIT_SHIFT_TABLE ;
position | position | v
----------+----------+----------------------
1 | 1 | 11011
2 | 2 | 011011
3 | 3 | 0011011
4 | 4 | 00011011
5 | 5 | 000011011
6 | 6 | 0000011011
7 | 7 | 00000011011
8 | 8 | 000000011011
9 | 9 | 0000000011011
10 | 10 | 00000000011011
11 | 11 | 000000000011011
12 | 12 | 0000000000011011
13 | 13 | 00000000000011011
14 | 14 | 000000000000011011
15 | 15 | 0000000000000011011
16 | 16 | 00000000000000011011
(16 rows)
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'
);
\d bit_defaults
Table "public.bit_defaults"
Column | Type | Collation | Nullable | Default
--------+----------------+-----------+----------+---------------------
b1 | bit(4) | | | '1001'::"bit"
b2 | bit(4) | | | '0101'::"bit"
b3 | bit varying(5) | | | '1001'::bit varying
b4 | bit varying(5) | | | '0101'::"bit"
INSERT INTO bit_defaults DEFAULT VALUES;
TABLE bit_defaults;
b1 | b2 | b3 | b4
------+------+------+------
1001 | 0101 | 1001 | 0101
(1 row)
-- test non-error-throwing API for some core types
SELECT pg_input_is_valid('01010001', 'bit(10)');
pg_input_is_valid
-------------------
f
(1 row)
SELECT * FROM pg_input_error_info('01010001', 'bit(10)');
message | detail | hint | sql_error_code
-------------------------------------------------+--------+------+----------------
bit string length 8 does not match type bit(10) | | | 22026
(1 row)
SELECT pg_input_is_valid('01010Z01', 'bit(8)');
pg_input_is_valid
-------------------
f
(1 row)
SELECT * FROM pg_input_error_info('01010Z01', 'bit(8)');
message | detail | hint | sql_error_code
---------------------------------+--------+------+----------------
"Z" is not a valid binary digit | | | 22P02
(1 row)
SELECT pg_input_is_valid('x01010Z01', 'bit(32)');
pg_input_is_valid
-------------------
f
(1 row)
SELECT * FROM pg_input_error_info('x01010Z01', 'bit(32)');
message | detail | hint | sql_error_code
--------------------------------------+--------+------+----------------
"Z" is not a valid hexadecimal digit | | | 22P02
(1 row)
SELECT pg_input_is_valid('01010Z01', 'varbit');
pg_input_is_valid
-------------------
f
(1 row)
SELECT * FROM pg_input_error_info('01010Z01', 'varbit');
message | detail | hint | sql_error_code
---------------------------------+--------+------+----------------
"Z" is not a valid binary digit | | | 22P02
(1 row)
SELECT pg_input_is_valid('x01010Z01', 'varbit');
pg_input_is_valid
-------------------
f
(1 row)
SELECT * FROM pg_input_error_info('x01010Z01', 'varbit');
message | detail | hint | sql_error_code
--------------------------------------+--------+------+----------------
"Z" is not a valid hexadecimal digit | | | 22P02
(1 row)