mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-08 12:19:22 +02:00
8ae9ad1cb8
can still work, per recent discussion on pghackers. Correct some bugs in ILIKE implementation.
494 lines
7.2 KiB
Plaintext
494 lines
7.2 KiB
Plaintext
--
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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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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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Three lines to one
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-------------------------------------
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first line - next line - third line
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(1 row)
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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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ERROR: parser: parse error at or near "'"
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--
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-- test conversions between various string types
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--
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SELECT CAST(f1 AS text) AS "text(char)" FROM CHAR_TBL;
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text(char)
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------------
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a
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ab
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abcd
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abcd
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(4 rows)
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SELECT CAST(f1 AS text) AS "text(varchar)" FROM VARCHAR_TBL;
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text(varchar)
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---------------
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a
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ab
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abcd
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abcd
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(4 rows)
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SELECT CAST(name 'namefield' AS text) AS "text(name)";
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text(name)
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------------
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namefield
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(1 row)
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SELECT CAST(f1 AS char(10)) AS "char(text)" FROM TEXT_TBL;
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char(text)
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------------
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doh!
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hi de ho n
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(2 rows)
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SELECT CAST(f1 AS char(10)) AS "char(varchar)" FROM VARCHAR_TBL;
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char(varchar)
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---------------
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a
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ab
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abcd
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abcd
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(4 rows)
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SELECT CAST(name 'namefield' AS char(10)) AS "char(name)";
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char(name)
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------------
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namefield
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(1 row)
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SELECT CAST(f1 AS varchar) AS "varchar(text)" FROM TEXT_TBL;
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varchar(text)
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-------------------
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doh!
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hi de ho neighbor
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(2 rows)
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SELECT CAST(f1 AS varchar) AS "varchar(char)" FROM CHAR_TBL;
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varchar(char)
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---------------
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a
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ab
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abcd
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abcd
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(4 rows)
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SELECT CAST(name 'namefield' AS varchar) AS "varchar(name)";
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varchar(name)
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---------------
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namefield
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(1 row)
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--
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-- test SQL92 string functions
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--
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SELECT TRIM(BOTH FROM ' bunch o blanks ') = 'bunch o blanks' AS "bunch o blanks";
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bunch o blanks
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----------------
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t
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(1 row)
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SELECT TRIM(LEADING FROM ' bunch o blanks ') = 'bunch o blanks ' AS "bunch o blanks ";
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bunch o blanks
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------------------
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t
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(1 row)
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SELECT TRIM(TRAILING FROM ' bunch o blanks ') = ' bunch o blanks' AS " bunch o blanks";
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bunch o blanks
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------------------
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t
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(1 row)
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SELECT TRIM(BOTH 'x' FROM 'xxxxxsome Xsxxxxx') = 'some Xs' AS "some Xs";
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some Xs
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---------
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t
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(1 row)
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SELECT SUBSTRING('1234567890' FROM 3) = '34567890' AS "34567890";
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34567890
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----------
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t
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(1 row)
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SELECT SUBSTRING('1234567890' FROM 4 FOR 3) = '456' AS "456";
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456
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-----
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t
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(1 row)
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SELECT POSITION('4' IN '1234567890') = '4' AS "4";
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4
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---
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t
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(1 row)
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SELECT POSITION(5 IN '1234567890') = '5' AS "5";
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5
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---
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t
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(1 row)
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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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SELECT 'hawkeye' LIKE 'h%' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'hawkeye' NOT LIKE 'h%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'hawkeye' LIKE 'H%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'hawkeye' NOT LIKE 'H%' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'hawkeye' LIKE 'indio%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'hawkeye' NOT LIKE 'indio%' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'hawkeye' LIKE 'h%eye' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'hawkeye' NOT LIKE 'h%eye' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'indio' LIKE '_ndio' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'indio' NOT LIKE '_ndio' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'indio' LIKE 'in__o' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'indio' NOT LIKE 'in__o' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'indio' LIKE 'in_o' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'indio' NOT LIKE 'in_o' AS "true";
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true
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------
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t
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(1 row)
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-- unused escape character
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SELECT 'hawkeye' LIKE 'h%' ESCAPE '#' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'hawkeye' NOT LIKE 'h%' ESCAPE '#' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'indio' LIKE 'ind_o' ESCAPE '$' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'indio' NOT LIKE 'ind_o' ESCAPE '$' AS "false";
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false
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-------
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f
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(1 row)
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-- escape character
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SELECT 'h%' LIKE 'h#%' ESCAPE '#' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'h%' NOT LIKE 'h#%' ESCAPE '#' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'h%wkeye' LIKE 'h#%' ESCAPE '#' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'h%wkeye' NOT LIKE 'h#%' ESCAPE '#' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'h%wkeye' LIKE 'h#%%' ESCAPE '#' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'h%wkeye' NOT LIKE 'h#%%' ESCAPE '#' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'h%awkeye' LIKE 'h#%a%k%e' ESCAPE '#' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'h%awkeye' NOT LIKE 'h#%a%k%e' ESCAPE '#' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'indio' LIKE '_ndio' ESCAPE '$' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'indio' NOT LIKE '_ndio' ESCAPE '$' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'i_dio' LIKE 'i$_d_o' ESCAPE '$' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'i_dio' NOT LIKE 'i$_d_o' ESCAPE '$' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'i_dio' LIKE 'i$_nd_o' ESCAPE '$' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'i_dio' NOT LIKE 'i$_nd_o' ESCAPE '$' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'i_dio' LIKE 'i$_d%o' ESCAPE '$' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'i_dio' NOT LIKE 'i$_d%o' ESCAPE '$' AS "false";
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false
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-------
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f
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(1 row)
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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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true
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------
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t
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(1 row)
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SELECT 'maca' NOT LIKE 'm%aca' ESCAPE '%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'ma%a' LIKE 'm%a%%a' ESCAPE '%' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'ma%a' NOT LIKE 'm%a%%a' ESCAPE '%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'bear' LIKE 'b_ear' ESCAPE '_' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'bear' NOT LIKE 'b_ear' ESCAPE '_' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'be_r' LIKE 'b_e__r' ESCAPE '_' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'be_r' NOT LIKE 'b_e__r' ESCAPE '_' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'be_r' LIKE '__e__r' ESCAPE '_' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'be_r' NOT LIKE '__e__r' ESCAPE '_' AS "true";
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true
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------
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t
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(1 row)
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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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true
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------
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t
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(1 row)
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SELECT 'hawkeye' NOT ILIKE 'h%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'hawkeye' ILIKE 'H%' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'hawkeye' NOT ILIKE 'H%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'hawkeye' ILIKE 'H%Eye' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'hawkeye' NOT ILIKE 'H%Eye' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'Hawkeye' ILIKE 'h%' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'Hawkeye' NOT ILIKE 'h%' AS "false";
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false
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-------
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f
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(1 row)
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--
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-- test implicit type conversion
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--
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SELECT 'unknown' || ' and unknown' AS "Concat unknown types";
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Concat unknown types
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----------------------
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unknown and unknown
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(1 row)
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SELECT text 'text' || ' and unknown' AS "Concat text to unknown type";
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Concat text to unknown type
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-----------------------------
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text and unknown
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(1 row)
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SELECT text 'text' || char(10) ' and characters' AS "Concat text to char";
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Concat text to char
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---------------------
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text and chara
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(1 row)
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SELECT text 'text' || varchar ' and varchar' AS "Concat text to varchar";
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Concat text to varchar
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------------------------
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text and varchar
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(1 row)
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