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Minimal support for oracle8 outer join syntax. (CVS 771)

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FossilOrigin-Name: 31df3690d0fe4bd4a293cbe8ca9a26c98c3ed3ce
This commit is contained in:
drh
2002-10-27 19:35:33 +00:00
parent 6977fea801
commit 1f16230b5c
8 changed files with 164 additions and 27 deletions
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19
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.147 2002/10/22 23:38:04 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.148 2002/10/27 19:35:35 drh Exp $
*/
#include "sqlite.h"
#include "hash.h"
@@ -493,7 +493,7 @@ struct Token {
struct Expr {
u8 op; /* Operation performed by this node */
u8 dataType; /* Either SQLITE_SO_TEXT or SQLITE_SO_NUM */
u8 isJoinExpr; /* Origin is the ON or USING phrase of a join */
u16 flags; /* Various flags. See below */
Expr *pLeft, *pRight; /* Left and right subnodes */
ExprList *pList; /* A list of expressions used as function arguments
** or in "<expr> IN (<expr-list)" */
@@ -507,6 +507,21 @@ struct Expr {
** right side of "<expr> IN (<select>)" */
};
/*
** The following are the meanings of bits in the Expr.flags field.
*/
#define EP_FromJoin 0x0001 /* Originated in ON or USING clause of a join */
#define EP_Oracle8Join 0x0002 /* Carries the Oracle8 "(+)" join operator */
/*
** These macros can be used to test, set, or clear bits in the
** Expr.flags field.
*/
#define ExprHasProperty(E,P) (((E)->flags&(P))==(P))
#define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0)
#define ExprSetProperty(E,P) (E)->flags|=(P)
#define ExprClearProperty(E,P) (E)->flags&=~(P)
/*
** A list of expressions. Each expression may optionally have a
** name. An expr/name combination can be used in several ways, such