21 lines
306 B
Plaintext
21 lines
306 B
Plaintext
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noupdate
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~~~~~~~~
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- trigger to prevent updates on single columns.
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Example:
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~~~~~~~
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CREATE TABLE TEST ( COL1 INT, COL2 INT, COL3 INT );
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CREATE TRIGGER BT BEFORE UPDATE ON TEST FOR EACH ROW
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EXECUTE PROCEDURE
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noup ('COL1');
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-- Now Try
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INSERT INTO TEST VALUES (10,20,30);
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UPDATE TEST SET COL1 = 5;
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