Tom Lane b26dfb9522 Extend pg_cast castimplicit column to a three-way value; this allows us ... to be flexible about assignment casts without introducing ambiguity in operator/function resolution. Introduce a well-defined promotion hierarchy for numeric datatypes (int2->int4->int8->numeric->float4->float8). Change make_const to initially label numeric literals as int4, int8, or numeric (never float8 anymore). Explicitly mark Func and RelabelType nodes to indicate whether they came from a function call, explicit cast, or implicit cast; use this to do reverse-listing more accurately and without so many heuristics. Explicit casts to char, varchar, bit, varbit will truncate or pad without raising an error (the pre-7.2 behavior), while assigning to a column without any explicit cast will still raise an error for wrong-length data like 7.3. This more nearly follows the SQL spec than 7.2 behavior (we should be reporting a 'completion condition' in the explicit-cast cases, but we have no mechanism for that, so just do silent truncation). Fix some problems with enforcement of typmod for array elements; it didn't work at all in 'UPDATE ... SET array[n] = foo', for example. Provide a generalized array_length_coerce() function to replace the specialized per-array-type functions that used to be needed (and were missing for NUMERIC as well as all the datetime types). Add missing conversions int8<->float4, text<->numeric, oid<->int8. initdb forced.		2002-09-18 21:35:25 +00:00
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catcache.c	pgindent run.	2002-09-04 20:31:48 +00:00
fcache.c	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
inval.c	pgindent run.	2002-09-04 20:31:48 +00:00
lsyscache.c	Extend pg_cast castimplicit column to a three-way value; this allows us	2002-09-18 21:35:25 +00:00
Makefile	Reimplement temp tables using schemas. The temp table map is history;	2002-03-31 06:26:32 +00:00
relcache.c	pgindent run.	2002-09-04 20:31:48 +00:00
syscache.c	pgindent run.	2002-09-04 20:31:48 +00:00