56 lines
1.6 KiB
Plaintext
56 lines
1.6 KiB
Plaintext
#
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# Test of prepared statements being rewritten.
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#
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CREATE TABLE t1 ( a INTEGER, b CHAR(1) );
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INSERT INTO t1 VALUES ( 1, 'a' ), ( 2, 'b' ), ( 3, 'c' );
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# Query rewrite plugin was installed.
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INSERT INTO query_rewrite.rewrite_rules ( pattern, replacement )
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VALUES ( 'SELECT a FROM test.t1 WHERE a = ?',
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'SELECT b FROM test.t1 WHERE a = ?' ),
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( 'SELECT 1, ?', 'SELECT "rewritten"' );
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CALL query_rewrite.flush_rewrite_rules();
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SELECT a FROM test.t1 WHERE a = 1;
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b
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a
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Warnings:
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Note 1105 Query 'SELECT a FROM test.t1 WHERE a = 1' rewritten to 'SELECT b FROM test.t1 WHERE a = 1' by a query rewrite plugin
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PREPARE stmt1 FROM 'SELECT a FROM test.t1 WHERE a = 1';
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Warnings:
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Note 1105 Query 'SELECT a FROM test.t1 WHERE a = 1' rewritten to 'SELECT b FROM test.t1 WHERE a = 1' by a query rewrite plugin
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EXECUTE stmt1;
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b
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a
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PREPARE stmt2 FROM 'SELECT a FROM test.t1 WHERE a = ?';
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Warnings:
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Note 1105 Query 'SELECT a FROM test.t1 WHERE a = ?' rewritten to 'SELECT b FROM test.t1 WHERE a = ?' by a query rewrite plugin
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SET @var = 1;
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EXECUTE stmt2 USING @var;
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b
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a
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SET @var = 2;
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EXECUTE stmt2 USING @var;
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b
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b
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SET @var = 3;
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EXECUTE stmt2 USING @var;
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b
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c
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PREPARE stmt3 FROM 'SELECT 1, ?';
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Warnings:
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Note 1105 Query 'SELECT 1, ?' rewritten to 'SELECT "rewritten"' by a query rewrite plugin
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SET @var= 1;
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EXECUTE stmt3;
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rewritten
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rewritten
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# Can't be rewritten. We rewrite at prepare time, when we don't know
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# the value of the first '?'.
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PREPARE stmt3 FROM 'SELECT ?, ?';
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SET @var= 1;
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EXECUTE stmt3 USING @var, @var;
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? ?
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1 1
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DROP TABLE t1;
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Warnings:
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Warning 1620 Plugin is busy and will be uninstalled on shutdown
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# Query rewrite plugin was queued for uninstalling.
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