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https://github.com/postgres/postgres.git
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3e23b68dac
This commit breaks any code that assumes that the mere act of forming a tuple (without writing it to disk) does not "toast" any fields. While all available regression tests pass, I'm not totally sure that we've fixed every nook and cranny, especially in contrib. Greg Stark with some help from Tom Lane
449 lines
15 KiB
SQL
449 lines
15 KiB
SQL
--
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-- STRINGS
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-- Test various data entry syntaxes.
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--
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-- SQL92 string continuation syntax
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-- E021-03 character string literals
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SELECT 'first line'
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' - next line'
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' - third line'
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AS "Three lines to one";
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-- illegal string continuation syntax
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SELECT 'first line'
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' - next line' /* this comment is not allowed here */
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' - third line'
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AS "Illegal comment within continuation";
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--
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-- test conversions between various string types
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-- E021-10 implicit casting among the character data types
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--
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SELECT CAST(f1 AS text) AS "text(char)" FROM CHAR_TBL;
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SELECT CAST(f1 AS text) AS "text(varchar)" FROM VARCHAR_TBL;
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SELECT CAST(name 'namefield' AS text) AS "text(name)";
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-- since this is an explicit cast, it should truncate w/o error:
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SELECT CAST(f1 AS char(10)) AS "char(text)" FROM TEXT_TBL;
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-- note: implicit-cast case is tested in char.sql
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SELECT CAST(f1 AS char(20)) AS "char(text)" FROM TEXT_TBL;
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SELECT CAST(f1 AS char(10)) AS "char(varchar)" FROM VARCHAR_TBL;
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SELECT CAST(name 'namefield' AS char(10)) AS "char(name)";
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SELECT CAST(f1 AS varchar) AS "varchar(text)" FROM TEXT_TBL;
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SELECT CAST(f1 AS varchar) AS "varchar(char)" FROM CHAR_TBL;
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SELECT CAST(name 'namefield' AS varchar) AS "varchar(name)";
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--
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-- test SQL92 string functions
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-- E### and T### are feature reference numbers from SQL99
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--
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-- E021-09 trim function
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SELECT TRIM(BOTH FROM ' bunch o blanks ') = 'bunch o blanks' AS "bunch o blanks";
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SELECT TRIM(LEADING FROM ' bunch o blanks ') = 'bunch o blanks ' AS "bunch o blanks ";
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SELECT TRIM(TRAILING FROM ' bunch o blanks ') = ' bunch o blanks' AS " bunch o blanks";
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SELECT TRIM(BOTH 'x' FROM 'xxxxxsome Xsxxxxx') = 'some Xs' AS "some Xs";
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-- E021-06 substring expression
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SELECT SUBSTRING('1234567890' FROM 3) = '34567890' AS "34567890";
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SELECT SUBSTRING('1234567890' FROM 4 FOR 3) = '456' AS "456";
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-- T581 regular expression substring (with SQL99's bizarre regexp syntax)
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SELECT SUBSTRING('abcdefg' FROM 'a#"(b_d)#"%' FOR '#') AS "bcd";
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-- No match should return NULL
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SELECT SUBSTRING('abcdefg' FROM '#"(b_d)#"%' FOR '#') IS NULL AS "True";
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-- Null inputs should return NULL
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SELECT SUBSTRING('abcdefg' FROM '(b|c)' FOR NULL) IS NULL AS "True";
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SELECT SUBSTRING(NULL FROM '(b|c)' FOR '#') IS NULL AS "True";
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SELECT SUBSTRING('abcdefg' FROM NULL FOR '#') IS NULL AS "True";
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-- PostgreSQL extension to allow omitting the escape character;
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-- here the regexp is taken as Posix syntax
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SELECT SUBSTRING('abcdefg' FROM 'c.e') AS "cde";
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-- With a parenthesized subexpression, return only what matches the subexpr
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SELECT SUBSTRING('abcdefg' FROM 'b(.*)f') AS "cde";
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-- PostgreSQL extension to allow using back reference in replace string;
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SELECT regexp_replace('1112223333', E'(\\d{3})(\\d{3})(\\d{4})', E'(\\1) \\2-\\3');
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SELECT regexp_replace('AAA BBB CCC ', E'\\s+', ' ', 'g');
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SELECT regexp_replace('AAA', '^|$', 'Z', 'g');
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SELECT regexp_replace('AAA aaa', 'A+', 'Z', 'gi');
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-- invalid regexp option
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SELECT regexp_replace('AAA aaa', 'A+', 'Z', 'z');
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-- set so we can tell NULL from empty string
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\pset null '\\N'
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-- return all matches from regexp
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SELECT regexp_matches('foobarbequebaz', $re$(bar)(beque)$re$);
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-- test case insensitive
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SELECT regexp_matches('foObARbEqUEbAz', $re$(bar)(beque)$re$, 'i');
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-- global option - more than one match
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SELECT regexp_matches('foobarbequebazilbarfbonk', $re$(b[^b]+)(b[^b]+)$re$, 'g');
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-- empty capture group (matched empty string)
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SELECT regexp_matches('foobarbequebaz', $re$(bar)(.*)(beque)$re$);
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-- no match
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SELECT regexp_matches('foobarbequebaz', $re$(bar)(.+)(beque)$re$);
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-- optional capture group did not match, null entry in array
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SELECT regexp_matches('foobarbequebaz', $re$(bar)(.+)?(beque)$re$);
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-- no capture groups
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SELECT regexp_matches('foobarbequebaz', $re$barbeque$re$);
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-- give me errors
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SELECT regexp_matches('foobarbequebaz', $re$(bar)(beque)$re$, 'zipper');
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SELECT regexp_matches('foobarbequebaz', $re$(barbeque$re$);
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SELECT regexp_matches('foobarbequebaz', $re$(bar)(beque){2,1}$re$);
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-- split string on regexp
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SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumped over the lazy dog', $re$\s+$re$) AS foo;
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SELECT regexp_split_to_array('the quick brown fox jumped over the lazy dog', $re$\s+$re$);
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SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumped over the lazy dog', $re$\s*$re$) AS foo;
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SELECT regexp_split_to_array('the quick brown fox jumped over the lazy dog', $re$\s*$re$);
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SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumped over the lazy dog', '') AS foo;
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SELECT regexp_split_to_array('the quick brown fox jumped over the lazy dog', '');
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-- case insensitive
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SELECT foo, length(foo) FROM regexp_split_to_table('thE QUick bROWn FOx jUMPed ovEr THE lazy dOG', 'e', 'i') AS foo;
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SELECT regexp_split_to_array('thE QUick bROWn FOx jUMPed ovEr THE lazy dOG', 'e', 'i');
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-- no match of pattern
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SELECT foo, length(foo) FROM regexp_split_to_table('the quick brown fox jumped over the lazy dog', 'nomatch') AS foo;
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SELECT regexp_split_to_array('the quick brown fox jumped over the lazy dog', 'nomatch');
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-- errors
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SELECT foo, length(foo) FROM regexp_split_to_table('thE QUick bROWn FOx jUMPed ovEr THE lazy dOG', 'e', 'zippy') AS foo;
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SELECT regexp_split_to_array('thE QUick bROWn FOx jUMPed ovEr THE lazy dOG', 'e', 'zippy');
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-- global option meaningless for regexp_split
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SELECT foo, length(foo) FROM regexp_split_to_table('thE QUick bROWn FOx jUMPed ovEr THE lazy dOG', 'e', 'g') AS foo;
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SELECT regexp_split_to_array('thE QUick bROWn FOx jUMPed ovEr THE lazy dOG', 'e', 'g');
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-- change NULL-display back
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\pset null ''
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-- E021-11 position expression
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SELECT POSITION('4' IN '1234567890') = '4' AS "4";
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SELECT POSITION(5 IN '1234567890') = '5' AS "5";
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-- T312 character overlay function
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SELECT OVERLAY('abcdef' PLACING '45' FROM 4) AS "abc45f";
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SELECT OVERLAY('yabadoo' PLACING 'daba' FROM 5) AS "yabadaba";
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SELECT OVERLAY('yabadoo' PLACING 'daba' FROM 5 FOR 0) AS "yabadabadoo";
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SELECT OVERLAY('babosa' PLACING 'ubb' FROM 2 FOR 4) AS "bubba";
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--
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-- test LIKE
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-- Be sure to form every test as a LIKE/NOT LIKE pair.
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--
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-- simplest examples
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-- E061-04 like predicate
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SELECT 'hawkeye' LIKE 'h%' AS "true";
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SELECT 'hawkeye' NOT LIKE 'h%' AS "false";
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SELECT 'hawkeye' LIKE 'H%' AS "false";
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SELECT 'hawkeye' NOT LIKE 'H%' AS "true";
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SELECT 'hawkeye' LIKE 'indio%' AS "false";
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SELECT 'hawkeye' NOT LIKE 'indio%' AS "true";
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SELECT 'hawkeye' LIKE 'h%eye' AS "true";
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SELECT 'hawkeye' NOT LIKE 'h%eye' AS "false";
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SELECT 'indio' LIKE '_ndio' AS "true";
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SELECT 'indio' NOT LIKE '_ndio' AS "false";
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SELECT 'indio' LIKE 'in__o' AS "true";
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SELECT 'indio' NOT LIKE 'in__o' AS "false";
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SELECT 'indio' LIKE 'in_o' AS "false";
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SELECT 'indio' NOT LIKE 'in_o' AS "true";
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-- unused escape character
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SELECT 'hawkeye' LIKE 'h%' ESCAPE '#' AS "true";
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SELECT 'hawkeye' NOT LIKE 'h%' ESCAPE '#' AS "false";
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SELECT 'indio' LIKE 'ind_o' ESCAPE '$' AS "true";
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SELECT 'indio' NOT LIKE 'ind_o' ESCAPE '$' AS "false";
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-- escape character
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-- E061-05 like predicate with escape clause
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SELECT 'h%' LIKE 'h#%' ESCAPE '#' AS "true";
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SELECT 'h%' NOT LIKE 'h#%' ESCAPE '#' AS "false";
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SELECT 'h%wkeye' LIKE 'h#%' ESCAPE '#' AS "false";
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SELECT 'h%wkeye' NOT LIKE 'h#%' ESCAPE '#' AS "true";
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SELECT 'h%wkeye' LIKE 'h#%%' ESCAPE '#' AS "true";
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SELECT 'h%wkeye' NOT LIKE 'h#%%' ESCAPE '#' AS "false";
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SELECT 'h%awkeye' LIKE 'h#%a%k%e' ESCAPE '#' AS "true";
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SELECT 'h%awkeye' NOT LIKE 'h#%a%k%e' ESCAPE '#' AS "false";
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SELECT 'indio' LIKE '_ndio' ESCAPE '$' AS "true";
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SELECT 'indio' NOT LIKE '_ndio' ESCAPE '$' AS "false";
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SELECT 'i_dio' LIKE 'i$_d_o' ESCAPE '$' AS "true";
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SELECT 'i_dio' NOT LIKE 'i$_d_o' ESCAPE '$' AS "false";
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SELECT 'i_dio' LIKE 'i$_nd_o' ESCAPE '$' AS "false";
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SELECT 'i_dio' NOT LIKE 'i$_nd_o' ESCAPE '$' AS "true";
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SELECT 'i_dio' LIKE 'i$_d%o' ESCAPE '$' AS "true";
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SELECT 'i_dio' NOT LIKE 'i$_d%o' ESCAPE '$' AS "false";
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-- escape character same as pattern character
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SELECT 'maca' LIKE 'm%aca' ESCAPE '%' AS "true";
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SELECT 'maca' NOT LIKE 'm%aca' ESCAPE '%' AS "false";
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SELECT 'ma%a' LIKE 'm%a%%a' ESCAPE '%' AS "true";
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SELECT 'ma%a' NOT LIKE 'm%a%%a' ESCAPE '%' AS "false";
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SELECT 'bear' LIKE 'b_ear' ESCAPE '_' AS "true";
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SELECT 'bear' NOT LIKE 'b_ear' ESCAPE '_' AS "false";
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SELECT 'be_r' LIKE 'b_e__r' ESCAPE '_' AS "true";
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SELECT 'be_r' NOT LIKE 'b_e__r' ESCAPE '_' AS "false";
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SELECT 'be_r' LIKE '__e__r' ESCAPE '_' AS "false";
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SELECT 'be_r' NOT LIKE '__e__r' ESCAPE '_' AS "true";
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--
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-- test ILIKE (case-insensitive LIKE)
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-- Be sure to form every test as an ILIKE/NOT ILIKE pair.
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--
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SELECT 'hawkeye' ILIKE 'h%' AS "true";
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SELECT 'hawkeye' NOT ILIKE 'h%' AS "false";
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SELECT 'hawkeye' ILIKE 'H%' AS "true";
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SELECT 'hawkeye' NOT ILIKE 'H%' AS "false";
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SELECT 'hawkeye' ILIKE 'H%Eye' AS "true";
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SELECT 'hawkeye' NOT ILIKE 'H%Eye' AS "false";
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SELECT 'Hawkeye' ILIKE 'h%' AS "true";
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SELECT 'Hawkeye' NOT ILIKE 'h%' AS "false";
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--
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-- test implicit type conversion
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--
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-- E021-07 character concatenation
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SELECT 'unknown' || ' and unknown' AS "Concat unknown types";
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SELECT text 'text' || ' and unknown' AS "Concat text to unknown type";
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SELECT char(20) 'characters' || ' and text' AS "Concat char to unknown type";
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SELECT text 'text' || char(20) ' and characters' AS "Concat text to char";
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SELECT text 'text' || varchar ' and varchar' AS "Concat text to varchar";
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--
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-- test substr with toasted text values
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--
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CREATE TABLE toasttest(f1 text);
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insert into toasttest values(repeat('1234567890',10000));
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insert into toasttest values(repeat('1234567890',10000));
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--
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-- Ensure that some values are uncompressed, to test the faster substring
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-- operation used in that case
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--
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alter table toasttest alter column f1 set storage external;
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insert into toasttest values(repeat('1234567890',10000));
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insert into toasttest values(repeat('1234567890',10000));
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-- If the starting position is zero or less, then return from the start of the string
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-- adjusting the length to be consistent with the "negative start" per SQL92.
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SELECT substr(f1, -1, 5) from toasttest;
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-- If the length is less than zero, an ERROR is thrown.
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SELECT substr(f1, 5, -1) from toasttest;
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-- If no third argument (length) is provided, the length to the end of the
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-- string is assumed.
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SELECT substr(f1, 99995) from toasttest;
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-- If start plus length is > string length, the result is truncated to
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-- string length
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SELECT substr(f1, 99995, 10) from toasttest;
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DROP TABLE toasttest;
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--
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-- test substr with toasted bytea values
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--
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CREATE TABLE toasttest(f1 bytea);
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insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
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insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
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--
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-- Ensure that some values are uncompressed, to test the faster substring
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-- operation used in that case
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--
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alter table toasttest alter column f1 set storage external;
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insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
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insert into toasttest values(decode(repeat('1234567890',10000),'escape'));
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-- If the starting position is zero or less, then return from the start of the string
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-- adjusting the length to be consistent with the "negative start" per SQL92.
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SELECT substr(f1, -1, 5) from toasttest;
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-- If the length is less than zero, an ERROR is thrown.
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SELECT substr(f1, 5, -1) from toasttest;
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-- If no third argument (length) is provided, the length to the end of the
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-- string is assumed.
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SELECT substr(f1, 99995) from toasttest;
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-- If start plus length is > string length, the result is truncated to
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-- string length
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SELECT substr(f1, 99995, 10) from toasttest;
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DROP TABLE toasttest;
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-- test internally compressing datums
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-- this tests compressing a datum to a very small size which exercises a
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-- corner case in packed-varlena handling: even though small, the compressed
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-- datum must be given a 4-byte header because there are no bits to indicate
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-- compression in a 1-byte header
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CREATE TABLE toasttest (c char(4096));
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INSERT INTO toasttest VALUES('x');
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SELECT length(c), c::text FROM toasttest;
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SELECT c FROM toasttest;
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DROP TABLE toasttest;
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--
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-- test length
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--
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SELECT length('abcdef') AS "length_6";
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--
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-- test strpos
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--
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SELECT strpos('abcdef', 'cd') AS "pos_3";
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SELECT strpos('abcdef', 'xy') AS "pos_0";
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--
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-- test replace
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--
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SELECT replace('abcdef', 'de', '45') AS "abc45f";
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SELECT replace('yabadabadoo', 'ba', '123') AS "ya123da123doo";
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SELECT replace('yabadoo', 'bad', '') AS "yaoo";
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--
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-- test split_part
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--
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select split_part('joeuser@mydatabase','@',0) AS "an error";
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select split_part('joeuser@mydatabase','@',1) AS "joeuser";
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select split_part('joeuser@mydatabase','@',2) AS "mydatabase";
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select split_part('joeuser@mydatabase','@',3) AS "empty string";
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select split_part('@joeuser@mydatabase@','@',2) AS "joeuser";
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--
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-- test to_hex
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--
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select to_hex(256*256*256 - 1) AS "ffffff";
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select to_hex(256::bigint*256::bigint*256::bigint*256::bigint - 1) AS "ffffffff";
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--
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-- MD5 test suite - from IETF RFC 1321
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-- (see: ftp://ftp.rfc-editor.org/in-notes/rfc1321.txt)
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--
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select md5('') = 'd41d8cd98f00b204e9800998ecf8427e' AS "TRUE";
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select md5('a') = '0cc175b9c0f1b6a831c399e269772661' AS "TRUE";
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select md5('abc') = '900150983cd24fb0d6963f7d28e17f72' AS "TRUE";
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select md5('message digest') = 'f96b697d7cb7938d525a2f31aaf161d0' AS "TRUE";
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select md5('abcdefghijklmnopqrstuvwxyz') = 'c3fcd3d76192e4007dfb496cca67e13b' AS "TRUE";
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select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789') = 'd174ab98d277d9f5a5611c2c9f419d9f' AS "TRUE";
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select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890') = '57edf4a22be3c955ac49da2e2107b67a' AS "TRUE";
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select md5(''::bytea) = 'd41d8cd98f00b204e9800998ecf8427e' AS "TRUE";
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select md5('a'::bytea) = '0cc175b9c0f1b6a831c399e269772661' AS "TRUE";
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select md5('abc'::bytea) = '900150983cd24fb0d6963f7d28e17f72' AS "TRUE";
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select md5('message digest'::bytea) = 'f96b697d7cb7938d525a2f31aaf161d0' AS "TRUE";
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select md5('abcdefghijklmnopqrstuvwxyz'::bytea) = 'c3fcd3d76192e4007dfb496cca67e13b' AS "TRUE";
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select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'::bytea) = 'd174ab98d277d9f5a5611c2c9f419d9f' AS "TRUE";
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select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890'::bytea) = '57edf4a22be3c955ac49da2e2107b67a' AS "TRUE";
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--
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-- test behavior of escape_string_warning and standard_conforming_strings options
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--
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set escape_string_warning = off;
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set standard_conforming_strings = off;
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show escape_string_warning;
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show standard_conforming_strings;
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set escape_string_warning = on;
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set standard_conforming_strings = on;
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show escape_string_warning;
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show standard_conforming_strings;
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select 'a\bcd' as f1, 'a\b''cd' as f2, 'a\b''''cd' as f3, 'abcd\' as f4, 'ab\''cd' as f5, '\\' as f6;
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set standard_conforming_strings = off;
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select 'a\\bcd' as f1, 'a\\b\'cd' as f2, 'a\\b\'''cd' as f3, 'abcd\\' as f4, 'ab\\\'cd' as f5, '\\\\' as f6;
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set escape_string_warning = off;
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set standard_conforming_strings = on;
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select 'a\bcd' as f1, 'a\b''cd' as f2, 'a\b''''cd' as f3, 'abcd\' as f4, 'ab\''cd' as f5, '\\' as f6;
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set standard_conforming_strings = off;
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select 'a\\bcd' as f1, 'a\\b\'cd' as f2, 'a\\b\'''cd' as f3, 'abcd\\' as f4, 'ab\\\'cd' as f5, '\\\\' as f6;
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