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https://github.com/MariaDB/server.git
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124 lines
2.7 KiB
SQL
124 lines
2.7 KiB
SQL
SET SESSION character_set_connection=latin2;
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SET SESSION character_set_client=cp1250;
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--echo #
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--echo # Test litteral
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--echo #
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# For "--view-protocol" NULLIF('','') converts to nullif(NULL,NULL)
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# in view definition and CHARSET(nullif(NULL,NULL)) returns 'binary'.
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# Also view does not allow columns with the same name,
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# so it uses generated names
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--disable_view_protocol
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SET sql_mode=@mode;
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select @@sql_mode;
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SELECT '',CHARSET(''), null, CHARSET(null), CAST(null as char(10)), CHARSET(CAST(null as char(10))), 'x', CHARSET('x');
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SELECT CHARSET(NULLIF('','')),NULLIF('','');
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SET sql_mode=default;
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SELECT '',CHARSET(''), null, CHARSET(null), CAST(null as char(10)), CHARSET(CAST(null as char(10))), 'x', CHARSET('x');
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SELECT CHARSET(NULLIF('','')),NULLIF('','');
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--echo #
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--echo # Test NCHAR litteral
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--echo #
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SET sql_mode=@mode;
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SELECT N'',CHARSET(N''), N'x', CHARSET(N'x');
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SELECT CHARSET(NULLIF(N'',N'')),NULLIF(N'',N'');
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SET sql_mode=default;
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SELECT N'',CHARSET(N''), N'x', CHARSET(N'x');
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SELECT CHARSET(NULLIF(N'',N'')),NULLIF(N'',N'');
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--echo #
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--echo # Test CHARSET prefix litteral
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--echo #
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SET sql_mode=@mode;
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SELECT _cp1250 '',CHARSET(_cp1250 ''), _cp1250 'x', CHARSET(_cp1250 'x');
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SELECT CHARSET(NULLIF(_cp1250 '',_cp1250 '')),NULLIF(_cp1250 '',_cp1250 '');
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SET sql_mode=default;
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SELECT _cp1250 '',CHARSET(_cp1250 ''), _cp1250 'x', CHARSET(_cp1250 'x');
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SELECT CHARSET(NULLIF(_cp1250 '',_cp1250 '')),NULLIF(_cp1250 '',_cp1250 '');
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SET sql_mode=@mode;
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--echo #
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--echo # Test litteral concat
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--echo #
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SELECT 'a' 'b';
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SELECT 'a' '';
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SELECT '' 'b';
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SELECT '' '';
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SELECT '' 'b' 'c';
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SELECT '' '' 'c';
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SELECT 'a' '' 'c';
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SELECT 'a' '' '';
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SELECT '' '' '';
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SELECT '' '' '',CHARSET('' '' '');
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SELECT _latin1'' '' '',CHARSET(_latin1'' '' '');
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SELECT N'' '' '',CHARSET(N'' '' '');
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--enable_view_protocol
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--echo #
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--echo # UNION - implicit group by
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--echo #
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--disable_service_connection
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SELECT 1, null
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UNION
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SELECT 1 , ''
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ORDER BY 1;
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SELECT 1, null
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UNION
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SELECT 1 , N''
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ORDER BY 1;
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SELECT 1, null
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UNION
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SELECT 1 , _cp1250 ''
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ORDER BY 1;
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SELECT NULLIF(_cp1250 '',_cp1250 '')
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UNION
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SELECT NULLIF(N'',N'');
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--error ER_CANT_AGGREGATE_2COLLATIONS
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SELECT 1 , _latin2 ''
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UNION
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SELECT 1 , _cp1250 '';
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SELECT 1, null
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UNION
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SELECT 1 , ''
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UNION
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SELECT 1 , N'';
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CREATE TABLE t1 (c1 INT,c2 VARCHAR(10));
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INSERT INTO t1 VALUES (1,'one');
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INSERT INTO t1 VALUES (1,'');
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INSERT INTO t1 VALUES (1,null);
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--echo #
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--echo # Test in a view
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--echo #
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CREATE VIEW v1
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AS SELECT c1, c2
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FROM t1
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UNION
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SELECT c1 , ''
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FROM t1
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ORDER BY 1,2;
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SELECT * FROM v1;
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SHOW CREATE VIEW v1;
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DROP VIEW v1;
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DROP TABLE t1;
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EXPLAIN EXTENDED SELECT '';
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EXPLAIN EXTENDED SELECT _latin1'';
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EXPLAIN EXTENDED SELECT N'';
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EXPLAIN EXTENDED SELECT '' '';
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--enable_service_connection
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