postgresql/src/include/parser/parse_expr.h

/*-------------------------------------------------------------------------
 *
 * parse_expr.h
 *
 *
 *
 * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: parse_expr.h,v 1.19 2000/06/15 03:32:55 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARSE_EXPR_H
#define PARSE_EXPR_H

#include "parser/parse_node.h"

#define EXPR_COLUMN_FIRST	1
#define EXPR_RELATION_FIRST 2

extern int	max_expr_depth;

extern Node *transformExpr(ParseState *pstate, Node *expr, int precedence);
extern Oid	exprType(Node *expr);
extern int32 exprTypmod(Node *expr);
extern bool exprIsLengthCoercion(Node *expr, int32 *coercedTypmod);
extern void parse_expr_init(void);

#endif	 /* PARSE_EXPR_H */
Break parser functions into smaller files, group together. 1997-11-26 06:07:18 +08:00			`/*-------------------------------------------------------------------------`
			`*`
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 08:26:20 +08:00			`* parse_expr.h`
Break parser functions into smaller files, group together. 1997-11-26 06:07:18 +08:00			`*`
			`*`
			`*`
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 13:58:53 +08:00			`* Portions Copyright (c) 1996-2000, PostgreSQL, Inc`
			`* Portions Copyright (c) 1994, Regents of the University of California`
Break parser functions into smaller files, group together. 1997-11-26 06:07:18 +08:00			`*`
Clean up #include's. 2000-06-15 11:33:12 +08:00			`* $Id: parse_expr.h,v 1.19 2000/06/15 03:32:55 momjian Exp $`
Break parser functions into smaller files, group together. 1997-11-26 06:07:18 +08:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
			`#ifndef PARSE_EXPR_H`
			`#define PARSE_EXPR_H`

Change #include's to use <> and "" as appropriate. 1999-07-16 07:04:24 +08:00			`#include "parser/parse_node.h"`
Break parser functions into smaller files, group together. 1997-11-26 06:07:18 +08:00
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 08:26:20 +08:00			`#define EXPR_COLUMN_FIRST 1`
			`#define EXPR_RELATION_FIRST 2`

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 13:29:07 +08:00			`extern int max_expr_depth;`

Cleanup up include files. 1997-11-26 09:14:33 +08:00			`extern Node transformExpr(ParseState pstate, Node *expr, int precedence);`
pgindent run before 6.3 release, with Thomas' requested changes. 1998-02-26 12:46:47 +08:00			`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 08:26:20 +08:00			`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. 2000-02-27 05:11:10 +08:00			`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 13:29:07 +08:00			`extern void parse_expr_init(void);`
Break parser functions into smaller files, group together. 1997-11-26 06:07:18 +08:00
OK, folks, here is the pgindent output. 1998-09-01 12:40:42 +08:00			`#endif /* PARSE_EXPR_H */`