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7173c485c8
such as bpchar(char_expression, N), and pull out the attrtypmod that the function is coercing to. This allows correct deduction of the column type in examples such as CREATE VIEW v AS SELECT f1::char(8) FROM tbl; Formerly we labeled v's column as char-of-unknown-length not char(8). Also, this change causes the parser not to insert a redundant length coercion function if the user has explicitly casted an INSERT or UPDATE expression to the right length.
29 lines
780 B
C
29 lines
780 B
C
/*-------------------------------------------------------------------------
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*
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* parse_expr.h
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*
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*
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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: parse_expr.h,v 1.17 2000/02/26 21:11:09 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PARSE_EXPR_H
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#define PARSE_EXPR_H
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#include "parser/parse_node.h"
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#include "parser/parse_type.h"
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#define EXPR_COLUMN_FIRST 1
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#define EXPR_RELATION_FIRST 2
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extern Node *transformExpr(ParseState *pstate, Node *expr, int precedence);
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extern Oid exprType(Node *expr);
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extern int32 exprTypmod(Node *expr);
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extern bool exprIsLengthCoercion(Node *expr, int32 *coercedTypmod);
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#endif /* PARSE_EXPR_H */
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