Commit eb121ba

Thomas G. Lockhart

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Implement IS OF and IS NOT OF type predicate.

Can now do queries of the form: SELECT value IS OF (integer, float8); Define macros for handling typmod manipulation for date/time types. Should be more robust than all of that brute-force inline code. Rename macros for masking and typmod manipulation to put TIMESTAMP_ or INTERVAL_ in front of the macro name, to reduce the possibility of name space collisions. Allow bit string constants without fully-specified length declaration. Try implementing CREATE TABLE/OF as a mapping to inheritance. May be appropriate, or may be replace later with something more exactly like one might expect from databases without the feature.

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src/backend/parser
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