mirror of
https://github.com/postgres/postgres.git
synced 2026-01-27 21:43:08 +03:00
99780da720
This commit updates encode() and decode() so that when an invalid encoding is specified, their error message includes a HINT listing all valid encodings. This helps users quickly see which encodings are supported without needing to consult the documentation. Author: Shinya Sugamoto <shinya34892@gmail.com> Reviewed-by: Chao Li <lic@highgo.com> Reviewed-by: Daniel Gustafsson <daniel@yesql.se> Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com> Reviewed-by: Peter Eisentraut <peter@eisentraut.org> Reviewed-by: Nathan Bossart <nathandbossart@gmail.com> Reviewed-by: Fujii Masao <masao.fujii@gmail.com> Discussion: https://postgr.es/m/CAAe3y+99sfPv8UDF1VM-rC1i5HBdqxUh=2HrbJJFm2+i=1OwOw@mail.gmail.com
1014 lines
36 KiB
SQL
1014 lines
36 KiB
SQL
--
|
||
-- STRINGS
|
||
-- Test various data entry syntaxes.
|
||
--
|
||
|
||
-- SQL string continuation syntax
|
||
-- E021-03 character string literals
|
||
SELECT 'first line'
|
||
' - next line'
|
||
' - third line'
|
||
AS "Three lines to one";
|
||
|
||
-- illegal string continuation syntax
|
||
SELECT 'first line'
|
||
' - next line' /* this comment is not allowed here */
|
||
' - third line'
|
||
AS "Illegal comment within continuation";
|
||
|
||
-- Unicode escapes
|
||
SET standard_conforming_strings TO on;
|
||
|
||
SELECT U&'d\0061t\+000061' AS U&"d\0061t\+000061";
|
||
SELECT U&'d!0061t\+000061' UESCAPE '!' AS U&"d*0061t\+000061" UESCAPE '*';
|
||
SELECT U&'a\\b' AS "a\b";
|
||
|
||
SELECT U&' \' UESCAPE '!' AS "tricky";
|
||
SELECT 'tricky' AS U&"\" UESCAPE '!';
|
||
|
||
SELECT U&'wrong: \061';
|
||
SELECT U&'wrong: \+0061';
|
||
SELECT U&'wrong: +0061' UESCAPE +;
|
||
SELECT U&'wrong: +0061' UESCAPE '+';
|
||
|
||
SELECT U&'wrong: \db99';
|
||
SELECT U&'wrong: \db99xy';
|
||
SELECT U&'wrong: \db99\\';
|
||
SELECT U&'wrong: \db99\0061';
|
||
SELECT U&'wrong: \+00db99\+000061';
|
||
SELECT U&'wrong: \+2FFFFF';
|
||
|
||
-- while we're here, check the same cases in E-style literals
|
||
SELECT E'd\u0061t\U00000061' AS "data";
|
||
SELECT E'a\\b' AS "a\b";
|
||
SELECT E'wrong: \u061';
|
||
SELECT E'wrong: \U0061';
|
||
SELECT E'wrong: \udb99';
|
||
SELECT E'wrong: \udb99xy';
|
||
SELECT E'wrong: \udb99\\';
|
||
SELECT E'wrong: \udb99\u0061';
|
||
SELECT E'wrong: \U0000db99\U00000061';
|
||
SELECT E'wrong: \U002FFFFF';
|
||
|
||
SET standard_conforming_strings TO off;
|
||
|
||
SELECT U&'d\0061t\+000061' AS U&"d\0061t\+000061";
|
||
SELECT U&'d!0061t\+000061' UESCAPE '!' AS U&"d*0061t\+000061" UESCAPE '*';
|
||
|
||
SELECT U&' \' UESCAPE '!' AS "tricky";
|
||
SELECT 'tricky' AS U&"\" UESCAPE '!';
|
||
|
||
SELECT U&'wrong: \061';
|
||
SELECT U&'wrong: \+0061';
|
||
SELECT U&'wrong: +0061' UESCAPE '+';
|
||
|
||
RESET standard_conforming_strings;
|
||
|
||
-- bytea
|
||
SET bytea_output TO hex;
|
||
SELECT E'\\xDeAdBeEf'::bytea;
|
||
SELECT E'\\x De Ad Be Ef '::bytea;
|
||
SELECT E'\\xDeAdBeE'::bytea;
|
||
SELECT E'\\xDeAdBeEx'::bytea;
|
||
SELECT E'\\xDe00BeEf'::bytea;
|
||
SELECT E'DeAdBeEf'::bytea;
|
||
SELECT E'De\\000dBeEf'::bytea;
|
||
SELECT E'De\123dBeEf'::bytea;
|
||
SELECT E'De\\123dBeEf'::bytea;
|
||
SELECT E'De\\678dBeEf'::bytea;
|
||
SELECT E'DeAd\\\\BeEf'::bytea;
|
||
|
||
SELECT reverse(''::bytea);
|
||
SELECT reverse('\xaa'::bytea);
|
||
SELECT reverse('\xabcd'::bytea);
|
||
|
||
SELECT ('\x' || repeat(' ', 32))::bytea;
|
||
SELECT ('\x' || repeat('!', 32))::bytea;
|
||
SELECT ('\x' || repeat('/', 34))::bytea;
|
||
SELECT ('\x' || repeat('0', 34))::bytea;
|
||
SELECT ('\x' || repeat('9', 32))::bytea;
|
||
SELECT ('\x' || repeat(':', 32))::bytea;
|
||
SELECT ('\x' || repeat('@', 34))::bytea;
|
||
SELECT ('\x' || repeat('A', 34))::bytea;
|
||
SELECT ('\x' || repeat('F', 32))::bytea;
|
||
SELECT ('\x' || repeat('G', 32))::bytea;
|
||
SELECT ('\x' || repeat('`', 34))::bytea;
|
||
SELECT ('\x' || repeat('a', 34))::bytea;
|
||
SELECT ('\x' || repeat('f', 32))::bytea;
|
||
SELECT ('\x' || repeat('g', 32))::bytea;
|
||
SELECT ('\x' || repeat('~', 34))::bytea;
|
||
|
||
SET bytea_output TO escape;
|
||
SELECT E'\\xDeAdBeEf'::bytea;
|
||
SELECT E'\\x De Ad Be Ef '::bytea;
|
||
SELECT E'\\xDe00BeEf'::bytea;
|
||
SELECT E'DeAdBeEf'::bytea;
|
||
SELECT E'De\\000dBeEf'::bytea;
|
||
SELECT E'De\\123dBeEf'::bytea;
|
||
SELECT E'DeAd\\\\BeEf'::bytea;
|
||
|
||
-- Test non-error-throwing API too
|
||
SELECT pg_input_is_valid(E'\\xDeAdBeE', 'bytea');
|
||
SELECT * FROM pg_input_error_info(E'\\xDeAdBeE', 'bytea');
|
||
SELECT * FROM pg_input_error_info(E'\\xDeAdBeEx', 'bytea');
|
||
SELECT * FROM pg_input_error_info(E'foo\\99bar', 'bytea');
|
||
|
||
--
|
||
-- test conversions between various string types
|
||
-- E021-10 implicit casting among the character data types
|
||
--
|
||
|
||
SELECT CAST(f1 AS text) AS "text(char)" FROM CHAR_TBL;
|
||
|
||
SELECT CAST(f1 AS text) AS "text(varchar)" FROM VARCHAR_TBL;
|
||
|
||
SELECT CAST(name 'namefield' AS text) AS "text(name)";
|
||
|
||
-- since this is an explicit cast, it should truncate w/o error:
|
||
SELECT CAST(f1 AS char(10)) AS "char(text)" FROM TEXT_TBL;
|
||
-- note: implicit-cast case is tested in char.sql
|
||
|
||
SELECT CAST(f1 AS char(20)) AS "char(text)" FROM TEXT_TBL;
|
||
|
||
SELECT CAST(f1 AS char(10)) AS "char(varchar)" FROM VARCHAR_TBL;
|
||
|
||
SELECT CAST(name 'namefield' AS char(10)) AS "char(name)";
|
||
|
||
SELECT CAST(f1 AS varchar) AS "varchar(text)" FROM TEXT_TBL;
|
||
|
||
SELECT CAST(f1 AS varchar) AS "varchar(char)" FROM CHAR_TBL;
|
||
|
||
SELECT CAST(name 'namefield' AS varchar) AS "varchar(name)";
|
||
|
||
--
|
||
-- test SQL string functions
|
||
-- E### and T### are feature reference numbers from SQL99
|
||
--
|
||
|
||
-- E021-09 trim function
|
||
SELECT TRIM(BOTH FROM ' bunch o blanks ') = 'bunch o blanks' AS "bunch o blanks";
|
||
|
||
SELECT TRIM(LEADING FROM ' bunch o blanks ') = 'bunch o blanks ' AS "bunch o blanks ";
|
||
|
||
SELECT TRIM(TRAILING FROM ' bunch o blanks ') = ' bunch o blanks' AS " bunch o blanks";
|
||
|
||
SELECT TRIM(BOTH 'x' FROM 'xxxxxsome Xsxxxxx') = 'some Xs' AS "some Xs";
|
||
|
||
-- E021-06 substring expression
|
||
SELECT SUBSTRING('1234567890' FROM 3) = '34567890' AS "34567890";
|
||
|
||
SELECT SUBSTRING('1234567890' FROM 4 FOR 3) = '456' AS "456";
|
||
|
||
-- test overflow cases
|
||
SELECT SUBSTRING('string' FROM 2 FOR 2147483646) AS "tring";
|
||
SELECT SUBSTRING('string' FROM -10 FOR 2147483646) AS "string";
|
||
SELECT SUBSTRING('string' FROM -10 FOR -2147483646) AS "error";
|
||
|
||
-- T581 regular expression substring (with SQL's bizarre regexp syntax)
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a#"(b_d)#"%' ESCAPE '#') AS "bcd";
|
||
-- obsolete SQL99 syntax
|
||
SELECT SUBSTRING('abcdefg' FROM 'a#"(b_d)#"%' FOR '#') AS "bcd";
|
||
|
||
-- No match should return NULL
|
||
SELECT SUBSTRING('abcdefg' SIMILAR '#"(b_d)#"%' ESCAPE '#') IS NULL AS "True";
|
||
|
||
-- Null inputs should return NULL
|
||
SELECT SUBSTRING('abcdefg' SIMILAR '%' ESCAPE NULL) IS NULL AS "True";
|
||
SELECT SUBSTRING(NULL SIMILAR '%' ESCAPE '#') IS NULL AS "True";
|
||
SELECT SUBSTRING('abcdefg' SIMILAR NULL ESCAPE '#') IS NULL AS "True";
|
||
|
||
-- The first and last parts should act non-greedy
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a#"%#"g' ESCAPE '#') AS "bcdef";
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a*#"%#"g*' ESCAPE '#') AS "abcdefg";
|
||
|
||
-- Vertical bar in any part affects only that part
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a|b#"%#"g' ESCAPE '#') AS "bcdef";
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a#"%#"x|g' ESCAPE '#') AS "bcdef";
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a#"%|ab#"g' ESCAPE '#') AS "bcdef";
|
||
|
||
-- Can't have more than two part separators
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a*#"%#"g*#"x' ESCAPE '#') AS "error";
|
||
|
||
-- Postgres extension: with 0 or 1 separator, assume parts 1 and 3 are empty
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a#"%g' ESCAPE '#') AS "bcdefg";
|
||
SELECT SUBSTRING('abcdefg' SIMILAR 'a%g' ESCAPE '#') AS "abcdefg";
|
||
|
||
-- substring() with just two arguments is not allowed by SQL spec;
|
||
-- we accept it, but we interpret the pattern as a POSIX regexp not SQL
|
||
SELECT SUBSTRING('abcdefg' FROM 'c.e') AS "cde";
|
||
|
||
-- With a parenthesized subexpression, return only what matches the subexpr
|
||
SELECT SUBSTRING('abcdefg' FROM 'b(.*)f') AS "cde";
|
||
-- Check case where we have a match, but not a subexpression match
|
||
SELECT SUBSTRING('foo' FROM 'foo(bar)?') IS NULL AS t;
|
||
|
||
-- Check behavior of SIMILAR TO, which uses largely the same regexp variant
|
||
SELECT 'abcdefg' SIMILAR TO '_bcd%' AS true;
|
||
SELECT 'abcdefg' SIMILAR TO 'bcd%' AS false;
|
||
SELECT 'abcdefg' SIMILAR TO '_bcd#%' ESCAPE '#' AS false;
|
||
SELECT 'abcd%' SIMILAR TO '_bcd#%' ESCAPE '#' AS true;
|
||
-- Postgres uses '\' as the default escape character, which is not per spec
|
||
SELECT 'abcdefg' SIMILAR TO '_bcd\%' AS false;
|
||
-- and an empty string to mean "no escape", which is also not per spec
|
||
SELECT 'abcd\efg' SIMILAR TO '_bcd\%' ESCAPE '' AS true;
|
||
-- these behaviors are per spec, though:
|
||
SELECT 'abcdefg' SIMILAR TO '_bcd%' ESCAPE NULL AS null;
|
||
SELECT 'abcdefg' SIMILAR TO '_bcd#%' ESCAPE '##' AS error;
|
||
|
||
-- Characters that should be left alone in character classes when a
|
||
-- SIMILAR TO regexp pattern is converted to POSIX style.
|
||
-- Underscore "_"
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '_[_[:alpha:]_]_';
|
||
-- Percentage "%"
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '%[%[:alnum:]%]%';
|
||
-- Dot "."
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '.[.[:alnum:].].';
|
||
-- Dollar "$"
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '$[$[:alnum:]$]$';
|
||
-- Opening parenthesis "("
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '()[([:alnum:](]()';
|
||
-- Caret "^"
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '^[^[:alnum:]^[^^][[^^]][\^][[\^]]\^]^';
|
||
-- Closing square bracket "]" at the beginning of character class
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '[]%][^]%][^%]%';
|
||
-- Closing square bracket effective after two carets at the beginning
|
||
-- of character class.
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '[^^]^';
|
||
-- Closing square bracket after an escape sequence at the beginning of
|
||
-- a character closes the character class
|
||
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '[|a]%' ESCAPE '|';
|
||
|
||
-- Test backslash escapes in regexp_replace's replacement string
|
||
SELECT regexp_replace('1112223333', E'(\\d{3})(\\d{3})(\\d{4})', E'(\\1) \\2-\\3');
|
||
SELECT regexp_replace('foobarrbazz', E'(.)\\1', E'X\\&Y', 'g');
|
||
SELECT regexp_replace('foobarrbazz', E'(.)\\1', E'X\\\\Y', 'g');
|
||
-- not an error, though perhaps it should be:
|
||
SELECT regexp_replace('foobarrbazz', E'(.)\\1', E'X\\Y\\1Z\\');
|
||
|
||
SELECT regexp_replace('AAA BBB CCC ', E'\\s+', ' ', 'g');
|
||
SELECT regexp_replace('AAA', '^|$', 'Z', 'g');
|
||
SELECT regexp_replace('AAA aaa', 'A+', 'Z', 'gi');
|
||
-- invalid regexp option
|
||
SELECT regexp_replace('AAA aaa', 'A+', 'Z', 'z');
|
||
|
||
-- extended regexp_replace tests
|
||
SELECT regexp_replace('A PostgreSQL function', 'A|e|i|o|u', 'X', 1);
|
||
SELECT regexp_replace('A PostgreSQL function', 'A|e|i|o|u', 'X', 1, 2);
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', 1, 0, 'i');
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', 1, 1, 'i');
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', 1, 2, 'i');
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', 1, 3, 'i');
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', 1, 9, 'i');
|
||
SELECT regexp_replace('A PostgreSQL function', 'A|e|i|o|u', 'X', 7, 0, 'i');
|
||
-- 'g' flag should be ignored when N is specified
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', 1, 1, 'g');
|
||
-- errors
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', -1, 0, 'i');
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', 1, -1, 'i');
|
||
-- erroneous invocation of non-extended form
|
||
SELECT regexp_replace('A PostgreSQL function', 'a|e|i|o|u', 'X', '1');
|
||
|
||
-- regexp_count tests
|
||
SELECT regexp_count('123123123123123', '(12)3');
|
||
SELECT regexp_count('123123123123', '123', 1);
|
||
SELECT regexp_count('123123123123', '123', 3);
|
||
SELECT regexp_count('123123123123', '123', 33);
|
||
SELECT regexp_count('ABCABCABCABC', 'Abc', 1, '');
|
||
SELECT regexp_count('ABCABCABCABC', 'Abc', 1, 'i');
|
||
-- errors
|
||
SELECT regexp_count('123123123123', '123', 0);
|
||
SELECT regexp_count('123123123123', '123', -3);
|
||
|
||
-- regexp_like tests
|
||
SELECT regexp_like('Steven', '^Ste(v|ph)en$');
|
||
SELECT regexp_like('a'||CHR(10)||'d', 'a.d', 'n');
|
||
SELECT regexp_like('a'||CHR(10)||'d', 'a.d', 's');
|
||
SELECT regexp_like('abc', ' a . c ', 'x');
|
||
SELECT regexp_like('abc', 'a.c', 'g'); -- error
|
||
|
||
-- regexp_instr tests
|
||
SELECT regexp_instr('abcdefghi', 'd.f');
|
||
SELECT regexp_instr('abcdefghi', 'd.q');
|
||
SELECT regexp_instr('abcabcabc', 'a.c');
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 2);
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 1, 3);
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 1, 4);
|
||
SELECT regexp_instr('abcabcabc', 'A.C', 1, 2, 0, 'i');
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 0, 'i', 0);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 0, 'i', 1);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 0, 'i', 2);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 0, 'i', 3);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 0, 'i', 4);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 0, 'i', 5);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 1, 'i', 0);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 1, 'i', 1);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 1, 'i', 2);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 1, 'i', 3);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 1, 'i', 4);
|
||
SELECT regexp_instr('1234567890', '(123)(4(56)(78))', 1, 1, 1, 'i', 5);
|
||
-- Check case where we have a match, but not a subexpression match
|
||
SELECT regexp_instr('foo', 'foo(bar)?', 1, 1, 0, '', 1);
|
||
-- errors
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 0, 1);
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 1, 0);
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 1, 1, -1);
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 1, 1, 2);
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 1, 1, 0, 'g');
|
||
SELECT regexp_instr('abcabcabc', 'a.c', 1, 1, 0, '', -1);
|
||
|
||
-- regexp_substr tests
|
||
SELECT regexp_substr('abcdefghi', 'd.f');
|
||
SELECT regexp_substr('abcdefghi', 'd.q') IS NULL AS t;
|
||
SELECT regexp_substr('abcabcabc', 'a.c');
|
||
SELECT regexp_substr('abcabcabc', 'a.c', 2);
|
||
SELECT regexp_substr('abcabcabc', 'a.c', 1, 3);
|
||
SELECT regexp_substr('abcabcabc', 'a.c', 1, 4) IS NULL AS t;
|
||
SELECT regexp_substr('abcabcabc', 'A.C', 1, 2, 'i');
|
||
SELECT regexp_substr('1234567890', '(123)(4(56)(78))', 1, 1, 'i', 0);
|
||
SELECT regexp_substr('1234567890', '(123)(4(56)(78))', 1, 1, 'i', 1);
|
||
SELECT regexp_substr('1234567890', '(123)(4(56)(78))', 1, 1, 'i', 2);
|
||
SELECT regexp_substr('1234567890', '(123)(4(56)(78))', 1, 1, 'i', 3);
|
||
SELECT regexp_substr('1234567890', '(123)(4(56)(78))', 1, 1, 'i', 4);
|
||
SELECT regexp_substr('1234567890', '(123)(4(56)(78))', 1, 1, 'i', 5) IS NULL AS t;
|
||
-- Check case where we have a match, but not a subexpression match
|
||
SELECT regexp_substr('foo', 'foo(bar)?', 1, 1, '', 1) IS NULL AS t;
|
||
-- errors
|
||
SELECT regexp_substr('abcabcabc', 'a.c', 0, 1);
|
||
SELECT regexp_substr('abcabcabc', 'a.c', 1, 0);
|
||
SELECT regexp_substr('abcabcabc', 'a.c', 1, 1, 'g');
|
||
SELECT regexp_substr('abcabcabc', 'a.c', 1, 1, '', -1);
|
||
|
||
-- set so we can tell NULL from empty string
|
||
\pset null '\\N'
|
||
|
||
-- return all matches from regexp
|
||
SELECT regexp_matches('foobarbequebaz', $re$(bar)(beque)$re$);
|
||
|
||
-- test case insensitive
|
||
SELECT regexp_matches('foObARbEqUEbAz', $re$(bar)(beque)$re$, 'i');
|
||
|
||
-- global option - more than one match
|
||
SELECT regexp_matches('foobarbequebazilbarfbonk', $re$(b[^b]+)(b[^b]+)$re$, 'g');
|
||
|
||
-- empty capture group (matched empty string)
|
||
SELECT regexp_matches('foobarbequebaz', $re$(bar)(.*)(beque)$re$);
|
||
-- no match
|
||
SELECT regexp_matches('foobarbequebaz', $re$(bar)(.+)(beque)$re$);
|
||
-- optional capture group did not match, null entry in array
|
||
SELECT regexp_matches('foobarbequebaz', $re$(bar)(.+)?(beque)$re$);
|
||
|
||
-- no capture groups
|
||
SELECT regexp_matches('foobarbequebaz', $re$barbeque$re$);
|
||
|
||
-- start/end-of-line matches are of zero length
|
||
SELECT regexp_matches('foo' || chr(10) || 'bar' || chr(10) || 'bequq' || chr(10) || 'baz', '^', 'mg');
|
||
SELECT regexp_matches('foo' || chr(10) || 'bar' || chr(10) || 'bequq' || chr(10) || 'baz', '$', 'mg');
|
||
SELECT regexp_matches('1' || chr(10) || '2' || chr(10) || '3' || chr(10) || '4' || chr(10), '^.?', 'mg');
|
||
SELECT regexp_matches(chr(10) || '1' || chr(10) || '2' || chr(10) || '3' || chr(10) || '4' || chr(10), '.?$', 'mg');
|
||
SELECT regexp_matches(chr(10) || '1' || chr(10) || '2' || chr(10) || '3' || chr(10) || '4', '.?$', 'mg');
|
||
|
||
-- give me errors
|
||
SELECT regexp_matches('foobarbequebaz', $re$(bar)(beque)$re$, 'gz');
|
||
SELECT regexp_matches('foobarbequebaz', $re$(barbeque$re$);
|
||
SELECT regexp_matches('foobarbequebaz', $re$(bar)(beque){2,1}$re$);
|
||
|
||
-- split string on regexp
|
||
SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumps over the lazy dog', $re$\s+$re$) AS foo;
|
||
SELECT regexp_split_to_array('the quick brown fox jumps over the lazy dog', $re$\s+$re$);
|
||
|
||
SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumps over the lazy dog', $re$\s*$re$) AS foo;
|
||
SELECT regexp_split_to_array('the quick brown fox jumps over the lazy dog', $re$\s*$re$);
|
||
SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumps over the lazy dog', '') AS foo;
|
||
SELECT regexp_split_to_array('the quick brown fox jumps over the lazy dog', '');
|
||
-- case insensitive
|
||
SELECT foo, length(foo) FROM regexp_split_to_table('thE QUick bROWn FOx jUMPs ovEr The lazy dOG', 'e', 'i') AS foo;
|
||
SELECT regexp_split_to_array('thE QUick bROWn FOx jUMPs ovEr The lazy dOG', 'e', 'i');
|
||
-- no match of pattern
|
||
SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumps over the lazy dog', 'nomatch') AS foo;
|
||
SELECT regexp_split_to_array('the quick brown fox jumps over the lazy dog', 'nomatch');
|
||
-- some corner cases
|
||
SELECT regexp_split_to_array('123456','1');
|
||
SELECT regexp_split_to_array('123456','6');
|
||
SELECT regexp_split_to_array('123456','.');
|
||
SELECT regexp_split_to_array('123456','');
|
||
SELECT regexp_split_to_array('123456','(?:)');
|
||
SELECT regexp_split_to_array('1','');
|
||
-- errors
|
||
SELECT foo, length(foo) FROM regexp_split_to_table('thE QUick bROWn FOx jUMPs ovEr The lazy dOG', 'e', 'zippy') AS foo;
|
||
SELECT regexp_split_to_array('thE QUick bROWn FOx jUMPs ovEr The lazy dOG', 'e', 'iz');
|
||
-- global option meaningless for regexp_split
|
||
SELECT foo, length(foo) FROM regexp_split_to_table('thE QUick bROWn FOx jUMPs ovEr The lazy dOG', 'e', 'g') AS foo;
|
||
SELECT regexp_split_to_array('thE QUick bROWn FOx jUMPs ovEr The lazy dOG', 'e', 'g');
|
||
|
||
-- change NULL-display back
|
||
\pset null ''
|
||
|
||
-- E021-11 position expression
|
||
SELECT POSITION('4' IN '1234567890') = '4' AS "4";
|
||
|
||
SELECT POSITION('5' IN '1234567890') = '5' AS "5";
|
||
|
||
SELECT POSITION('\x11'::bytea IN ''::bytea) = 0 AS "0";
|
||
SELECT POSITION('\x33'::bytea IN '\x1122'::bytea) = 0 AS "0";
|
||
SELECT POSITION(''::bytea IN '\x1122'::bytea) = 1 AS "1";
|
||
SELECT POSITION('\x22'::bytea IN '\x1122'::bytea) = 2 AS "2";
|
||
SELECT POSITION('\x5678'::bytea IN '\x1234567890'::bytea) = 3 AS "3";
|
||
|
||
-- T312 character overlay function
|
||
SELECT OVERLAY('abcdef' PLACING '45' FROM 4) AS "abc45f";
|
||
|
||
SELECT OVERLAY('yabadoo' PLACING 'daba' FROM 5) AS "yabadaba";
|
||
|
||
SELECT OVERLAY('yabadoo' PLACING 'daba' FROM 5 FOR 0) AS "yabadabadoo";
|
||
|
||
SELECT OVERLAY('babosa' PLACING 'ubb' FROM 2 FOR 4) AS "bubba";
|
||
|
||
--
|
||
-- test LIKE
|
||
-- Be sure to form every test as a LIKE/NOT LIKE pair.
|
||
--
|
||
|
||
-- simplest examples
|
||
-- E061-04 like predicate
|
||
SELECT 'hawkeye' LIKE 'h%' AS "true";
|
||
SELECT 'hawkeye' NOT LIKE 'h%' AS "false";
|
||
|
||
SELECT 'hawkeye' LIKE 'H%' AS "false";
|
||
SELECT 'hawkeye' NOT LIKE 'H%' AS "true";
|
||
|
||
SELECT 'hawkeye' LIKE 'indio%' AS "false";
|
||
SELECT 'hawkeye' NOT LIKE 'indio%' AS "true";
|
||
|
||
SELECT 'hawkeye' LIKE 'h%eye' AS "true";
|
||
SELECT 'hawkeye' NOT LIKE 'h%eye' AS "false";
|
||
|
||
SELECT 'indio' LIKE '_ndio' AS "true";
|
||
SELECT 'indio' NOT LIKE '_ndio' AS "false";
|
||
|
||
SELECT 'indio' LIKE 'in__o' AS "true";
|
||
SELECT 'indio' NOT LIKE 'in__o' AS "false";
|
||
|
||
SELECT 'indio' LIKE 'in_o' AS "false";
|
||
SELECT 'indio' NOT LIKE 'in_o' AS "true";
|
||
|
||
SELECT 'abc'::name LIKE '_b_' AS "true";
|
||
SELECT 'abc'::name NOT LIKE '_b_' AS "false";
|
||
|
||
SELECT 'abc'::bytea LIKE '_b_'::bytea AS "true";
|
||
SELECT 'abc'::bytea NOT LIKE '_b_'::bytea AS "false";
|
||
|
||
-- unused escape character
|
||
SELECT 'hawkeye' LIKE 'h%' ESCAPE '#' AS "true";
|
||
SELECT 'hawkeye' NOT LIKE 'h%' ESCAPE '#' AS "false";
|
||
|
||
SELECT 'indio' LIKE 'ind_o' ESCAPE '$' AS "true";
|
||
SELECT 'indio' NOT LIKE 'ind_o' ESCAPE '$' AS "false";
|
||
|
||
-- escape character
|
||
-- E061-05 like predicate with escape clause
|
||
SELECT 'h%' LIKE 'h#%' ESCAPE '#' AS "true";
|
||
SELECT 'h%' NOT LIKE 'h#%' ESCAPE '#' AS "false";
|
||
|
||
SELECT 'h%wkeye' LIKE 'h#%' ESCAPE '#' AS "false";
|
||
SELECT 'h%wkeye' NOT LIKE 'h#%' ESCAPE '#' AS "true";
|
||
|
||
SELECT 'h%wkeye' LIKE 'h#%%' ESCAPE '#' AS "true";
|
||
SELECT 'h%wkeye' NOT LIKE 'h#%%' ESCAPE '#' AS "false";
|
||
|
||
SELECT 'h%awkeye' LIKE 'h#%a%k%e' ESCAPE '#' AS "true";
|
||
SELECT 'h%awkeye' NOT LIKE 'h#%a%k%e' ESCAPE '#' AS "false";
|
||
|
||
SELECT 'indio' LIKE '_ndio' ESCAPE '$' AS "true";
|
||
SELECT 'indio' NOT LIKE '_ndio' ESCAPE '$' AS "false";
|
||
|
||
SELECT 'i_dio' LIKE 'i$_d_o' ESCAPE '$' AS "true";
|
||
SELECT 'i_dio' NOT LIKE 'i$_d_o' ESCAPE '$' AS "false";
|
||
|
||
SELECT 'i_dio' LIKE 'i$_nd_o' ESCAPE '$' AS "false";
|
||
SELECT 'i_dio' NOT LIKE 'i$_nd_o' ESCAPE '$' AS "true";
|
||
|
||
SELECT 'i_dio' LIKE 'i$_d%o' ESCAPE '$' AS "true";
|
||
SELECT 'i_dio' NOT LIKE 'i$_d%o' ESCAPE '$' AS "false";
|
||
|
||
SELECT 'a_c'::bytea LIKE 'a$__'::bytea ESCAPE '$'::bytea AS "true";
|
||
SELECT 'a_c'::bytea NOT LIKE 'a$__'::bytea ESCAPE '$'::bytea AS "false";
|
||
|
||
-- escape character same as pattern character
|
||
SELECT 'maca' LIKE 'm%aca' ESCAPE '%' AS "true";
|
||
SELECT 'maca' NOT LIKE 'm%aca' ESCAPE '%' AS "false";
|
||
|
||
SELECT 'ma%a' LIKE 'm%a%%a' ESCAPE '%' AS "true";
|
||
SELECT 'ma%a' NOT LIKE 'm%a%%a' ESCAPE '%' AS "false";
|
||
|
||
SELECT 'bear' LIKE 'b_ear' ESCAPE '_' AS "true";
|
||
SELECT 'bear' NOT LIKE 'b_ear' ESCAPE '_' AS "false";
|
||
|
||
SELECT 'be_r' LIKE 'b_e__r' ESCAPE '_' AS "true";
|
||
SELECT 'be_r' NOT LIKE 'b_e__r' ESCAPE '_' AS "false";
|
||
|
||
SELECT 'be_r' LIKE '__e__r' ESCAPE '_' AS "false";
|
||
SELECT 'be_r' NOT LIKE '__e__r' ESCAPE '_' AS "true";
|
||
|
||
|
||
--
|
||
-- test ILIKE (case-insensitive LIKE)
|
||
-- Be sure to form every test as an ILIKE/NOT ILIKE pair.
|
||
--
|
||
|
||
SELECT 'hawkeye' ILIKE 'h%' AS "true";
|
||
SELECT 'hawkeye' NOT ILIKE 'h%' AS "false";
|
||
|
||
SELECT 'hawkeye' ILIKE 'H%' AS "true";
|
||
SELECT 'hawkeye' NOT ILIKE 'H%' AS "false";
|
||
|
||
SELECT 'hawkeye' ILIKE 'H%Eye' AS "true";
|
||
SELECT 'hawkeye' NOT ILIKE 'H%Eye' AS "false";
|
||
|
||
SELECT 'Hawkeye' ILIKE 'h%' AS "true";
|
||
SELECT 'Hawkeye' NOT ILIKE 'h%' AS "false";
|
||
|
||
SELECT 'ABC'::name ILIKE '_b_' AS "true";
|
||
SELECT 'ABC'::name NOT ILIKE '_b_' AS "false";
|
||
|
||
--
|
||
-- test %/_ combination cases, cf bugs #4821 and #5478
|
||
--
|
||
|
||
SELECT 'foo' LIKE '_%' as t, 'f' LIKE '_%' as t, '' LIKE '_%' as f;
|
||
SELECT 'foo' LIKE '%_' as t, 'f' LIKE '%_' as t, '' LIKE '%_' as f;
|
||
|
||
SELECT 'foo' LIKE '__%' as t, 'foo' LIKE '___%' as t, 'foo' LIKE '____%' as f;
|
||
SELECT 'foo' LIKE '%__' as t, 'foo' LIKE '%___' as t, 'foo' LIKE '%____' as f;
|
||
|
||
SELECT 'jack' LIKE '%____%' AS t;
|
||
|
||
|
||
--
|
||
-- basic tests of LIKE with indexes
|
||
--
|
||
|
||
CREATE TABLE texttest (a text PRIMARY KEY, b int);
|
||
SELECT * FROM texttest WHERE a LIKE '%1%';
|
||
|
||
CREATE TABLE byteatest (a bytea PRIMARY KEY, b int);
|
||
SELECT * FROM byteatest WHERE a LIKE '%1%';
|
||
|
||
DROP TABLE texttest, byteatest;
|
||
|
||
|
||
--
|
||
-- test implicit type conversion
|
||
--
|
||
|
||
-- E021-07 character concatenation
|
||
SELECT 'unknown' || ' and unknown' AS "Concat unknown types";
|
||
|
||
SELECT text 'text' || ' and unknown' AS "Concat text to unknown type";
|
||
|
||
SELECT char(20) 'characters' || ' and text' AS "Concat char to unknown type";
|
||
|
||
SELECT text 'text' || char(20) ' and characters' AS "Concat text to char";
|
||
|
||
SELECT text 'text' || varchar ' and varchar' AS "Concat text to varchar";
|
||
|
||
--
|
||
-- test substr with toasted text values
|
||
--
|
||
CREATE TABLE toasttest(f1 text);
|
||
|
||
insert into toasttest values(repeat('1234567890',10000));
|
||
insert into toasttest values(repeat('1234567890',10000));
|
||
|
||
--
|
||
-- Ensure that some values are uncompressed, to test the faster substring
|
||
-- operation used in that case
|
||
--
|
||
alter table toasttest alter column f1 set storage external;
|
||
insert into toasttest values(repeat('1234567890',10000));
|
||
insert into toasttest values(repeat('1234567890',10000));
|
||
|
||
-- If the starting position is zero or less, then return from the start of the string
|
||
-- adjusting the length to be consistent with the "negative start" per SQL.
|
||
SELECT substr(f1, -1, 5) from toasttest;
|
||
|
||
-- If the length is less than zero, an ERROR is thrown.
|
||
SELECT substr(f1, 5, -1) from toasttest;
|
||
|
||
-- If no third argument (length) is provided, the length to the end of the
|
||
-- string is assumed.
|
||
SELECT substr(f1, 99995) from toasttest;
|
||
|
||
-- If start plus length is > string length, the result is truncated to
|
||
-- string length
|
||
SELECT substr(f1, 99995, 10) from toasttest;
|
||
|
||
TRUNCATE TABLE toasttest;
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
-- expect >0 blocks
|
||
SELECT pg_relation_size(reltoastrelid) = 0 AS is_empty
|
||
FROM pg_class where relname = 'toasttest';
|
||
|
||
TRUNCATE TABLE toasttest;
|
||
ALTER TABLE toasttest set (toast_tuple_target = 4080);
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
INSERT INTO toasttest values (repeat('1234567890',300));
|
||
-- expect 0 blocks
|
||
SELECT pg_relation_size(reltoastrelid) = 0 AS is_empty
|
||
FROM pg_class where relname = 'toasttest';
|
||
|
||
DROP TABLE toasttest;
|
||
|
||
--
|
||
-- test substr with toasted bytea values
|
||
--
|
||
CREATE TABLE toasttest(f1 bytea);
|
||
|
||
insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
|
||
insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
|
||
|
||
--
|
||
-- Ensure that some values are uncompressed, to test the faster substring
|
||
-- operation used in that case
|
||
--
|
||
alter table toasttest alter column f1 set storage external;
|
||
insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
|
||
insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
|
||
|
||
-- If the starting position is zero or less, then return from the start of the string
|
||
-- adjusting the length to be consistent with the "negative start" per SQL.
|
||
SELECT substr(f1, -1, 5) from toasttest;
|
||
|
||
-- If the length is less than zero, an ERROR is thrown.
|
||
SELECT substr(f1, 5, -1) from toasttest;
|
||
|
||
-- If no third argument (length) is provided, the length to the end of the
|
||
-- string is assumed.
|
||
SELECT substr(f1, 99995) from toasttest;
|
||
|
||
-- If start plus length is > string length, the result is truncated to
|
||
-- string length
|
||
SELECT substr(f1, 99995, 10) from toasttest;
|
||
|
||
DROP TABLE toasttest;
|
||
|
||
-- test internally compressing datums
|
||
|
||
-- this tests compressing a datum to a very small size which exercises a
|
||
-- corner case in packed-varlena handling: even though small, the compressed
|
||
-- datum must be given a 4-byte header because there are no bits to indicate
|
||
-- compression in a 1-byte header
|
||
|
||
CREATE TABLE toasttest (c char(4096));
|
||
INSERT INTO toasttest VALUES('x');
|
||
SELECT length(c), c::text FROM toasttest;
|
||
SELECT c FROM toasttest;
|
||
DROP TABLE toasttest;
|
||
|
||
-- test with short varlenas (up to 126 data bytes reduced to a 1-byte header)
|
||
-- being toasted.
|
||
CREATE TABLE toasttest (f1 text, f2 text);
|
||
ALTER TABLE toasttest SET (toast_tuple_target = 128);
|
||
ALTER TABLE toasttest ALTER COLUMN f1 SET STORAGE EXTERNAL;
|
||
ALTER TABLE toasttest ALTER COLUMN f2 SET STORAGE EXTERNAL;
|
||
-- Here, the first value is a varlena large enough to make it toasted and
|
||
-- stored uncompressed. The second value is a short varlena, toasted
|
||
-- and stored uncompressed.
|
||
INSERT INTO toasttest values(repeat('1234', 1000), repeat('5678', 30));
|
||
SELECT reltoastrelid::regclass AS reltoastname FROM pg_class
|
||
WHERE oid = 'toasttest'::regclass \gset
|
||
-- There should be two values inserted in the toast relation.
|
||
SELECT count(*) FROM :reltoastname WHERE chunk_seq = 0;
|
||
SELECT substr(f1, 5, 10) AS f1_data, substr(f2, 5, 10) AS f2_data
|
||
FROM toasttest;
|
||
SELECT pg_column_compression(f1) AS f1_comp, pg_column_compression(f2) AS f2_comp
|
||
FROM toasttest;
|
||
DROP TABLE toasttest;
|
||
|
||
--
|
||
-- test length
|
||
--
|
||
|
||
SELECT length('abcdef') AS "length_6";
|
||
|
||
--
|
||
-- test strpos
|
||
--
|
||
|
||
SELECT strpos('abcdef', 'cd') AS "pos_3";
|
||
|
||
SELECT strpos('abcdef', 'xy') AS "pos_0";
|
||
|
||
SELECT strpos('abcdef', '') AS "pos_1";
|
||
|
||
SELECT strpos('', 'xy') AS "pos_0";
|
||
|
||
SELECT strpos('', '') AS "pos_1";
|
||
|
||
--
|
||
-- test replace
|
||
--
|
||
SELECT replace('abcdef', 'de', '45') AS "abc45f";
|
||
|
||
SELECT replace('yabadabadoo', 'ba', '123') AS "ya123da123doo";
|
||
|
||
SELECT replace('yabadoo', 'bad', '') AS "yaoo";
|
||
|
||
--
|
||
-- test split_part
|
||
--
|
||
select split_part('','@',1) AS "empty string";
|
||
|
||
select split_part('','@',-1) AS "empty string";
|
||
|
||
select split_part('joeuser@mydatabase','',1) AS "joeuser@mydatabase";
|
||
|
||
select split_part('joeuser@mydatabase','',2) AS "empty string";
|
||
|
||
select split_part('joeuser@mydatabase','',-1) AS "joeuser@mydatabase";
|
||
|
||
select split_part('joeuser@mydatabase','',-2) AS "empty string";
|
||
|
||
select split_part('joeuser@mydatabase','@',0) AS "an error";
|
||
|
||
select split_part('joeuser@mydatabase','@@',1) AS "joeuser@mydatabase";
|
||
|
||
select split_part('joeuser@mydatabase','@@',2) AS "empty string";
|
||
|
||
select split_part('joeuser@mydatabase','@',1) AS "joeuser";
|
||
|
||
select split_part('joeuser@mydatabase','@',2) AS "mydatabase";
|
||
|
||
select split_part('joeuser@mydatabase','@',3) AS "empty string";
|
||
|
||
select split_part('@joeuser@mydatabase@','@',2) AS "joeuser";
|
||
|
||
select split_part('joeuser@mydatabase','@',-1) AS "mydatabase";
|
||
|
||
select split_part('joeuser@mydatabase','@',-2) AS "joeuser";
|
||
|
||
select split_part('joeuser@mydatabase','@',-3) AS "empty string";
|
||
|
||
select split_part('@joeuser@mydatabase@','@',-2) AS "mydatabase";
|
||
|
||
--
|
||
-- test to_bin, to_oct, and to_hex
|
||
--
|
||
select to_bin(-1234) AS "11111111111111111111101100101110";
|
||
select to_bin(-1234::bigint);
|
||
select to_bin(256*256*256 - 1) AS "111111111111111111111111";
|
||
select to_bin(256::bigint*256::bigint*256::bigint*256::bigint - 1) AS "11111111111111111111111111111111";
|
||
|
||
select to_oct(-1234) AS "37777775456";
|
||
select to_oct(-1234::bigint) AS "1777777777777777775456";
|
||
select to_oct(256*256*256 - 1) AS "77777777";
|
||
select to_oct(256::bigint*256::bigint*256::bigint*256::bigint - 1) AS "37777777777";
|
||
|
||
select to_hex(-1234) AS "fffffb2e";
|
||
select to_hex(-1234::bigint) AS "fffffffffffffb2e";
|
||
select to_hex(256*256*256 - 1) AS "ffffff";
|
||
select to_hex(256::bigint*256::bigint*256::bigint*256::bigint - 1) AS "ffffffff";
|
||
|
||
--
|
||
-- SHA-2
|
||
--
|
||
SET bytea_output TO hex;
|
||
|
||
SELECT sha224('');
|
||
SELECT sha224('The quick brown fox jumps over the lazy dog.');
|
||
|
||
SELECT sha256('');
|
||
SELECT sha256('The quick brown fox jumps over the lazy dog.');
|
||
|
||
SELECT sha384('');
|
||
SELECT sha384('The quick brown fox jumps over the lazy dog.');
|
||
|
||
SELECT sha512('');
|
||
SELECT sha512('The quick brown fox jumps over the lazy dog.');
|
||
|
||
--
|
||
-- CRC
|
||
--
|
||
SELECT crc32('');
|
||
SELECT crc32('The quick brown fox jumps over the lazy dog.');
|
||
|
||
SELECT crc32c('');
|
||
SELECT crc32c('The quick brown fox jumps over the lazy dog.');
|
||
|
||
SELECT crc32c(repeat('A', 127)::bytea);
|
||
SELECT crc32c(repeat('A', 128)::bytea);
|
||
SELECT crc32c(repeat('A', 129)::bytea);
|
||
SELECT crc32c(repeat('A', 800)::bytea);
|
||
|
||
--
|
||
-- encode/decode
|
||
--
|
||
SELECT encode('\x1234567890abcdef00', 'hex');
|
||
SELECT decode('1234567890abcdef00', 'hex');
|
||
SELECT encode(('\x' || repeat('1234567890abcdef0001', 7))::bytea, 'base64');
|
||
SELECT decode(encode(('\x' || repeat('1234567890abcdef0001', 7))::bytea,
|
||
'base64'), 'base64');
|
||
SELECT encode('\x1234567890abcdef00', 'escape');
|
||
SELECT decode(encode('\x1234567890abcdef00', 'escape'), 'escape');
|
||
|
||
-- report an error with a hint listing valid encodings when an invalid encoding is specified
|
||
SELECT encode('\x01'::bytea, 'invalid'); -- error
|
||
SELECT decode('00', 'invalid'); -- error
|
||
|
||
--
|
||
-- base64url encoding/decoding
|
||
--
|
||
SET bytea_output TO hex;
|
||
|
||
-- Simple encoding/decoding
|
||
SELECT encode('\x69b73eff', 'base64url'); -- abc-_w
|
||
SELECT decode('abc-_w', 'base64url'); -- \x69b73eff
|
||
|
||
-- Round-trip: decode(encode(x)) = x
|
||
SELECT decode(encode('\x1234567890abcdef00', 'base64url'), 'base64url'); -- \x1234567890abcdef00
|
||
|
||
-- Empty input
|
||
SELECT encode('', 'base64url'); -- ''
|
||
SELECT decode('', 'base64url'); -- ''
|
||
|
||
-- 1 byte input
|
||
SELECT encode('\x01', 'base64url'); -- AQ
|
||
SELECT decode('AQ', 'base64url'); -- \x01
|
||
|
||
-- 2 byte input
|
||
SELECT encode('\x0102'::bytea, 'base64url'); -- AQI
|
||
SELECT decode('AQI', 'base64url'); -- \x0102
|
||
|
||
-- 3 byte input (no padding needed)
|
||
SELECT encode('\x010203'::bytea, 'base64url'); -- AQID
|
||
SELECT decode('AQID', 'base64url'); -- \x010203
|
||
|
||
-- 4 byte input (results in 6 base64 chars)
|
||
SELECT encode('\xdeadbeef'::bytea, 'base64url'); -- 3q2-7w
|
||
SELECT decode('3q2-7w', 'base64url'); -- \xdeadbeef
|
||
|
||
-- Round-trip test for all lengths from 0–4
|
||
SELECT encode(decode(encode(E'\\x', 'base64url'), 'base64url'), 'base64url');
|
||
SELECT encode(decode(encode(E'\\x00', 'base64url'), 'base64url'), 'base64url');
|
||
SELECT encode(decode(encode(E'\\x0001', 'base64url'), 'base64url'), 'base64url');
|
||
SELECT encode(decode(encode(E'\\x000102', 'base64url'), 'base64url'), 'base64url');
|
||
SELECT encode(decode(encode(E'\\x00010203', 'base64url'), 'base64url'), 'base64url');
|
||
|
||
-- Invalid inputs (should ERROR)
|
||
-- invalid character '@'
|
||
SELECT decode('QQ@=', 'base64url');
|
||
|
||
-- missing characters (incomplete group)
|
||
SELECT decode('QQ', 'base64url'); -- ok (1 byte)
|
||
SELECT decode('QQI', 'base64url'); -- ok (2 bytes)
|
||
SELECT decode('QQIDQ', 'base64url'); -- ERROR: invalid base64url end sequence
|
||
|
||
-- unexpected '=' at start
|
||
SELECT decode('=QQQ', 'base64url');
|
||
|
||
-- valid base64 padding in base64url (optional, but accepted)
|
||
SELECT decode('abc-_w==', 'base64url'); -- should decode to \x69b73eff
|
||
|
||
--
|
||
-- get_bit/set_bit etc
|
||
--
|
||
SELECT get_bit('\x1234567890abcdef00'::bytea, 43);
|
||
SELECT get_bit('\x1234567890abcdef00'::bytea, 99); -- error
|
||
SELECT set_bit('\x1234567890abcdef00'::bytea, 43, 0);
|
||
SELECT set_bit('\x1234567890abcdef00'::bytea, 99, 0); -- error
|
||
SELECT get_byte('\x1234567890abcdef00'::bytea, 3);
|
||
SELECT get_byte('\x1234567890abcdef00'::bytea, 99); -- error
|
||
SELECT set_byte('\x1234567890abcdef00'::bytea, 7, 11);
|
||
SELECT set_byte('\x1234567890abcdef00'::bytea, 99, 11); -- error
|
||
|
||
--
|
||
-- conversions between bytea and integer types
|
||
--
|
||
SELECT 0x1234::int2::bytea AS "\x1234", (-0x1234)::int2::bytea AS "\xedcc";
|
||
SELECT 0x12345678::int4::bytea AS "\x12345678", (-0x12345678)::int4::bytea AS "\xedcba988";
|
||
SELECT 0x1122334455667788::int8::bytea AS "\x1122334455667788",
|
||
(-0x1122334455667788)::int8::bytea AS "\xeeddccbbaa998878";
|
||
|
||
SELECT ''::bytea::int2 AS "0";
|
||
SELECT '\x12'::bytea::int2 AS "18";
|
||
SELECT '\x1234'::bytea::int2 AS "4460";
|
||
SELECT '\x123456'::bytea::int2; -- error
|
||
|
||
SELECT ''::bytea::int4 AS "0";
|
||
SELECT '\x12'::bytea::int4 AS "18";
|
||
SELECT '\x12345678'::bytea::int4 AS "305419896";
|
||
SELECT '\x123456789A'::bytea::int4; -- error
|
||
|
||
SELECT ''::bytea::int8 AS "0";
|
||
SELECT '\x12'::bytea::int8 AS "18";
|
||
SELECT '\x1122334455667788'::bytea::int8 AS "1234605616436508552";
|
||
SELECT '\x112233445566778899'::bytea::int8; -- error
|
||
|
||
-- min/max integer values
|
||
SELECT '\x8000'::bytea::int2 AS "-32768", '\x7FFF'::bytea::int2 AS "32767";
|
||
SELECT '\x80000000'::bytea::int4 AS "-2147483648", '\x7FFFFFFF'::bytea::int4 AS "2147483647";
|
||
SELECT '\x8000000000000000'::bytea::int8 AS "-9223372036854775808",
|
||
'\x7FFFFFFFFFFFFFFF'::bytea::int8 AS "9223372036854775807";
|
||
|
||
--
|
||
-- test behavior of escape_string_warning and standard_conforming_strings options
|
||
--
|
||
set escape_string_warning = off;
|
||
set standard_conforming_strings = off;
|
||
|
||
show escape_string_warning;
|
||
show standard_conforming_strings;
|
||
|
||
set escape_string_warning = on;
|
||
set standard_conforming_strings = on;
|
||
|
||
show escape_string_warning;
|
||
show standard_conforming_strings;
|
||
|
||
select 'a\bcd' as f1, 'a\b''cd' as f2, 'a\b''''cd' as f3, 'abcd\' as f4, 'ab\''cd' as f5, '\\' as f6;
|
||
|
||
set standard_conforming_strings = off;
|
||
|
||
select 'a\\bcd' as f1, 'a\\b\'cd' as f2, 'a\\b\'''cd' as f3, 'abcd\\' as f4, 'ab\\\'cd' as f5, '\\\\' as f6;
|
||
|
||
set escape_string_warning = off;
|
||
set standard_conforming_strings = on;
|
||
|
||
select 'a\bcd' as f1, 'a\b''cd' as f2, 'a\b''''cd' as f3, 'abcd\' as f4, 'ab\''cd' as f5, '\\' as f6;
|
||
|
||
set standard_conforming_strings = off;
|
||
|
||
select 'a\\bcd' as f1, 'a\\b\'cd' as f2, 'a\\b\'''cd' as f3, 'abcd\\' as f4, 'ab\\\'cd' as f5, '\\\\' as f6;
|
||
|
||
reset standard_conforming_strings;
|
||
|
||
|
||
--
|
||
-- Additional string functions
|
||
--
|
||
SET bytea_output TO escape;
|
||
|
||
SELECT initcap('hi THOMAS');
|
||
|
||
SELECT lpad('hi', 5, 'xy');
|
||
SELECT lpad('hi', 5);
|
||
SELECT lpad('hi', -5, 'xy');
|
||
SELECT lpad('hello', 2);
|
||
SELECT lpad('hi', 5, '');
|
||
|
||
SELECT rpad('hi', 5, 'xy');
|
||
SELECT rpad('hi', 5);
|
||
SELECT rpad('hi', -5, 'xy');
|
||
SELECT rpad('hello', 2);
|
||
SELECT rpad('hi', 5, '');
|
||
|
||
SELECT ltrim('zzzytrim', 'xyz');
|
||
|
||
SELECT translate('', '14', 'ax');
|
||
SELECT translate('12345', '14', 'ax');
|
||
SELECT translate('12345', '134', 'a');
|
||
|
||
SELECT ascii('x');
|
||
SELECT ascii('');
|
||
|
||
SELECT chr(65);
|
||
SELECT chr(0);
|
||
|
||
SELECT repeat('Pg', 4);
|
||
SELECT repeat('Pg', -4);
|
||
|
||
SELECT SUBSTRING('1234567890'::bytea FROM 3) "34567890";
|
||
SELECT SUBSTRING('1234567890'::bytea FROM 4 FOR 3) AS "456";
|
||
SELECT SUBSTRING('string'::bytea FROM 2 FOR 2147483646) AS "tring";
|
||
SELECT SUBSTRING('string'::bytea FROM -10 FOR 2147483646) AS "string";
|
||
SELECT SUBSTRING('string'::bytea FROM -10 FOR -2147483646) AS "error";
|
||
|
||
SELECT trim(E'\\000'::bytea from E'\\000Tom\\000'::bytea);
|
||
SELECT trim(leading E'\\000'::bytea from E'\\000Tom\\000'::bytea);
|
||
SELECT trim(trailing E'\\000'::bytea from E'\\000Tom\\000'::bytea);
|
||
SELECT btrim(E'\\000trim\\000'::bytea, E'\\000'::bytea);
|
||
SELECT btrim(''::bytea, E'\\000'::bytea);
|
||
SELECT btrim(E'\\000trim\\000'::bytea, ''::bytea);
|
||
SELECT encode(overlay(E'Th\\000omas'::bytea placing E'Th\\001omas'::bytea from 2),'escape');
|
||
SELECT encode(overlay(E'Th\\000omas'::bytea placing E'\\002\\003'::bytea from 8),'escape');
|
||
SELECT encode(overlay(E'Th\\000omas'::bytea placing E'\\002\\003'::bytea from 5 for 3),'escape');
|
||
|
||
SELECT bit_count('\x1234567890'::bytea);
|
||
|
||
SELECT unistr('\0064at\+0000610');
|
||
SELECT unistr('d\u0061t\U000000610');
|
||
SELECT unistr('a\\b');
|
||
-- errors:
|
||
SELECT unistr('wrong: \db99');
|
||
SELECT unistr('wrong: \db99\0061');
|
||
SELECT unistr('wrong: \+00db99\+000061');
|
||
SELECT unistr('wrong: \+2FFFFF');
|
||
SELECT unistr('wrong: \udb99\u0061');
|
||
SELECT unistr('wrong: \U0000db99\U00000061');
|
||
SELECT unistr('wrong: \U002FFFFF');
|
||
SELECT unistr('wrong: \xyz');
|