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Appendix A: NULL-related bugs in Firebird

Attention: both historic and current bugs are listed in the sections below. Always look if and when a bug has been fixed before assuming that it exists in your version of Firebird.

Bugs that crash the server

EXECUTE STATEMENT with NULL argument

EXECUTE STATEMENT with a NULL argument crashed Firebird 1.5 and 1.5.1 servers. Fixed in 1.5.2.

EXTRACT from NULL date

In 1.0.0, EXTRACT from a NULL date would crash the server. Fixed in 1.0.2.

FIRST and SKIP with NULL argument

FIRST and SKIP crash a Firebird 1.5.n or lower server if given a NULL argument. Fixed in 2.0.

LIKE with NULL escape

Using LIKE with a NULL escape character would crash the server. Fixed in 1.5.1.

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