diff options
author | Tom Lane | 2002-09-18 21:35:25 +0000 |
---|---|---|
committer | Tom Lane | 2002-09-18 21:35:25 +0000 |
commit | b26dfb95222fddd25322bdddf3a5a58d3392d8b1 (patch) | |
tree | 757cf0bafab985d38a5c84d3afebe5edd34c4f27 /src/include/parser/parse_target.h | |
parent | cc70ba2e4daa78ba99619770e19beb06de3dfd1c (diff) |
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.
Diffstat (limited to 'src/include/parser/parse_target.h')
-rw-r--r-- | src/include/parser/parse_target.h | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/src/include/parser/parse_target.h b/src/include/parser/parse_target.h index acca0f05690..b8c495484bf 100644 --- a/src/include/parser/parse_target.h +++ b/src/include/parser/parse_target.h @@ -1,13 +1,13 @@ /*------------------------------------------------------------------------- * * parse_target.h - * + * handle target lists * * * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: parse_target.h,v 1.26 2002/09/04 20:31:45 momjian Exp $ + * $Id: parse_target.h,v 1.27 2002/09/18 21:35:24 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -16,6 +16,7 @@ #include "parser/parse_node.h" + extern List *transformTargetList(ParseState *pstate, List *targetlist); extern TargetEntry *transformTargetEntry(ParseState *pstate, Node *node, Node *expr, @@ -23,9 +24,6 @@ extern TargetEntry *transformTargetEntry(ParseState *pstate, extern void updateTargetListEntry(ParseState *pstate, TargetEntry *tle, char *colname, int attrno, List *indirection); -extern Node *CoerceTargetExpr(ParseState *pstate, Node *expr, - Oid type_id, Oid attrtype, int32 attrtypmod, - bool isExplicit); extern List *checkInsertTargets(ParseState *pstate, List *cols, List **attrnos); |