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Add test for UNION.

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Add additional tests in strings for conversions of the "name" data type.
Test SQL92 string functions such as SUBSTRING() and POSITION().
This commit is contained in:
Thomas G. Lockhart
1998-05-29 13:23:02 +00:00
parent 3955d66803
commit 5812d51270
3 changed files with 135 additions and 3 deletions
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53
src/test/regress/sql/strings.sql
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@@ -11,13 +11,60 @@ SELECT 'first line'
-- illegal string continuation syntax
SELECT 'first line'
' - next line' /* this comment is not allowed here */
' - third line';
' - third line'
AS "Illegal comment within continuation";
--
-- test conversions between various string types
--
SELECT text(f1) FROM CHAR_TBL;
SELECT CAST(f1 AS text) AS "text(char)" FROM CHAR_TBL;
SELECT text(f1) FROM VARCHAR_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) AS "char(text)" FROM TEXT_TBL;
SELECT CAST(f1 AS char) AS "char(varchar)" FROM VARCHAR_TBL;
SELECT CAST(name 'namefield' AS char) 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 ') AS "bunch o blanks";
SELECT TRIM(LEADING FROM ' bunch o blanks ') AS "bunch o blanks ";
SELECT TRIM(TRAILING FROM ' bunch o blanks ') AS " bunch o blanks";
SELECT TRIM(BOTH 'x' FROM 'xxxxxsome Xsxxxxx') AS "some Xs";
SELECT SUBSTRING('1234567890' FROM 3) AS "34567890";
SELECT SUBSTRING('1234567890' FROM 4 FOR 3) AS "456";
SELECT POSITION('4' IN '1234567890') AS "4";
SELECT POSITION(5 IN '1234567890') AS "5";
--
-- test implicit type conversion
--
SELECT 'unknown' || ' and unknown' AS "Concat unknown types";
SELECT text 'text' || ' and unknown' AS "Concat text to unknown type";
SELECT text 'text' || char ' and char' AS "Concat text to char";
SELECT text 'text' || varchar ' and varchar' AS "Concat text to varchar";