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postgresql/src/include/parser/parse_expr.h

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Break parser functions into smaller files, group together.
1997-11-25 23:07:18 +01:00
/*-------------------------------------------------------------------------
*
Rewrite parser's handling of INSERT ... SELECT so that processing of the SELECT part of the statement is just like a plain SELECT. All INSERT-specific processing happens after the SELECT parsing is done. This eliminates many problems, e.g. INSERT ... SELECT ... GROUP BY using the wrong column labels. Ensure that DEFAULT clauses are coerced to the target column type, whether or not stored clause produces the right type. Substantial cleanup of parser's array support.
1999-07-19 02:26:20 +02:00
* parse_expr.h
Break parser functions into smaller files, group together.
1997-11-25 23:07:18 +01:00
*
*
*
Update copyright to 2002.
2002-06-20 22:29:54 +02:00
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
2000-01-26 06:58:53 +01:00
* Portions Copyright (c) 1994, Regents of the University of California
Break parser functions into smaller files, group together.
1997-11-25 23:07:18 +01:00
*
Add DOMAIN check constraints. Rod Taylor
2002-11-15 03:50:21 +01:00
* $Id: parse_expr.h,v 1.29 2002/11/15 02:50:21 momjian Exp $
Break parser functions into smaller files, group together.
1997-11-25 23:07:18 +01:00
*
*-------------------------------------------------------------------------
*/
#ifndef PARSE_EXPR_H
#define PARSE_EXPR_H
Change #include's to use <> and "" as appropriate.
1999-07-16 01:04:24 +02:00
#include "parser/parse_node.h"
Break parser functions into smaller files, group together.
1997-11-25 23:07:18 +01:00
Rewrite parser's handling of INSERT ... SELECT so that processing of the SELECT part of the statement is just like a plain SELECT. All INSERT-specific processing happens after the SELECT parsing is done. This eliminates many problems, e.g. INSERT ... SELECT ... GROUP BY using the wrong column labels. Ensure that DEFAULT clauses are coerced to the target column type, whether or not stored clause produces the right type. Substantial cleanup of parser's array support.
1999-07-19 02:26:20 +02:00
First phase of SCHEMA changes, concentrating on fixing the grammar and the parsetree representation. As yet we don't *do* anything with schema names, just drop 'em on the floor; but you can enter schema-compatible command syntax, and there's even a primitive CREATE SCHEMA command. No doc updates yet, except to note that you can now extract a field from a function-returning-row's result with (foo(...)).fieldname.
2002-03-21 17:02:16 +01:00
/* GUC parameters */
Add safety check on expression nesting depth. Default value is set by a config.h #define, and the runtime value can be controlled via SET.
2000-03-17 06:29:07 +01:00
extern int max_expr_depth;
Provide tunable knob for x = NULL -> x IS NULL transformation, default to off.
2001-09-20 16:20:28 +02:00
extern bool Transform_null_equals;
Add safety check on expression nesting depth. Default value is set by a config.h #define, and the runtime value can be controlled via SET.
2000-03-17 06:29:07 +01:00
Add DOMAIN check constraints. Rod Taylor
2002-11-15 03:50:21 +01:00
extern Node *transformExpr(ParseState *pstate, Node *expr, ConstraintTestValue *domVal);
pgindent run before 6.3 release, with Thomas' requested changes.
1998-02-26 05:46:47 +01:00
extern Oid exprType(Node *expr);
Rewrite parser's handling of INSERT ... SELECT so that processing of the SELECT part of the statement is just like a plain SELECT. All INSERT-specific processing happens after the SELECT parsing is done. This eliminates many problems, e.g. INSERT ... SELECT ... GROUP BY using the wrong column labels. Ensure that DEFAULT clauses are coerced to the target column type, whether or not stored clause produces the right type. Substantial cleanup of parser's array support.
1999-07-19 02:26:20 +02:00
extern int32 exprTypmod(Node *expr);
Fix exprTypmod to recognize length-coercion function expressions, 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.
2000-02-26 22:11:10 +01:00
extern bool exprIsLengthCoercion(Node *expr, int32 *coercedTypmod);
Add safety check on expression nesting depth. Default value is set by a config.h #define, and the runtime value can be controlled via SET.
2000-03-17 06:29:07 +01:00
extern void parse_expr_init(void);
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments.
2001-10-28 07:26:15 +01:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 18:46:40 +01:00
#endif /* PARSE_EXPR_H */