mirror of
https://git.postgresql.org/git/postgresql.git
synced 2026-02-19 12:56:59 +08:00
7c0c9b3cce
right, but it failed to get the padding case right. This was obscured by subsequent application of bpchar() in all but one regression test case, and that one didn't fail in an obvious way --- trailing blanks are hard to see. Add another test case to make it more obvious if it breaks again.
169 lines
4.7 KiB
SQL
169 lines
4.7 KiB
SQL
--
|
|
-- STRINGS
|
|
-- Test various data entry syntaxes.
|
|
--
|
|
|
|
-- SQL92 string continuation syntax
|
|
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";
|
|
|
|
--
|
|
-- test conversions between various string 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)";
|
|
|
|
SELECT CAST(f1 AS char(10)) AS "char(text)" FROM TEXT_TBL; -- fail
|
|
|
|
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 SQL92 string functions
|
|
--
|
|
|
|
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";
|
|
|
|
SELECT SUBSTRING('1234567890' FROM 3) = '34567890' AS "34567890";
|
|
|
|
SELECT SUBSTRING('1234567890' FROM 4 FOR 3) = '456' AS "456";
|
|
|
|
SELECT POSITION('4' IN '1234567890') = '4' AS "4";
|
|
|
|
SELECT POSITION(5 IN '1234567890') = '5' AS "5";
|
|
|
|
--
|
|
-- test LIKE
|
|
-- Be sure to form every test as a LIKE/NOT LIKE pair.
|
|
--
|
|
|
|
-- simplest examples
|
|
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";
|
|
|
|
-- 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
|
|
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";
|
|
|
|
-- 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";
|
|
|
|
--
|
|
-- test implicit type conversion
|
|
--
|
|
|
|
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";
|
|
|