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Beginning to insert the infrastructure for ON CONFLICT clauses. (CVS 355)

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FossilOrigin-Name: e00a9ff8f99dd58f7cb19a6195fac21f4c8b4af9
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drh
2002-01-29 18:41:24 +00:00
parent 881a99e493
commit 9cfcf5d4f6
13 changed files with 590 additions and 209 deletions
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28
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.79 2002/01/22 14:11:29 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.80 2002/01/29 18:41:25 drh Exp $
*/
#include "sqlite.h"
#include "hash.h"
@@ -233,8 +233,24 @@ struct Table {
u8 isCommit; /* True if creation of this table has been committed */
u8 isTemp; /* True if stored in db->pBeTemp instead of db->pBe */
u8 hasPrimKey; /* True if there exists a primary key */
u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */
};
/*
** SQLite supports three different ways to resolve a UNIQUE contraint
** error. (1) It can abort the transaction return SQLITE_CONSTRAINT.
** (2) It can decide to not do the INSERT or UPDATE that was causing
** the constraint violation. (3) It can delete existing records from
** the table so that the pending INSERT or UPDATE will work without
** a constraint error. The following there symbolic values are used
** to record which type of action to take.
*/
#define OE_None 0 /* There is no constraint to check */
#define OE_Abort 1 /* Abort and rollback. */
#define OE_Ignore 2 /* Ignore the error. Do not do the INSERT or UPDATE */
#define OE_Replace 3 /* Delete existing record, then do INSERT or UPDATE */
#define OE_Default 9 /* Do whatever the default action is */
/*
** Each SQL index is represented in memory by an
** instance of the following structure.
@@ -260,9 +276,10 @@ struct Index {
int *aiColumn; /* Which columns are used by this index. 1st is 0 */
Table *pTable; /* The SQL table being indexed */
int tnum; /* Page containing root of this index in database file */
u8 isUnique; /* True if keys must all be unique */
u8 isUnique; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
u8 isCommit; /* True if creation of this index has been committed */
u8 isDropped; /* True if a DROP INDEX has executed on this index */
u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
Index *pNext; /* The next index associated with the same table */
};
@@ -483,13 +500,14 @@ void sqliteCommitInternalChanges(sqlite*);
void sqliteRollbackInternalChanges(sqlite*);
void sqliteStartTable(Parse*,Token*,Token*,int);
void sqliteAddColumn(Parse*,Token*);
void sqliteAddNotNull(Parse*);
void sqliteAddNotNull(Parse*, int);
void sqliteAddPrimaryKey(Parse*, IdList*, int);
void sqliteAddColumnType(Parse*,Token*,Token*);
void sqliteAddDefaultValue(Parse*,Token*,int);
void sqliteEndTable(Parse*,Token*);
void sqliteDropTable(Parse*, Token*);
void sqliteDeleteTable(sqlite*, Table*);
void sqliteInsert(Parse*, Token*, ExprList*, Select*, IdList*);
void sqliteInsert(Parse*, Token*, ExprList*, Select*, IdList*, int);
IdList *sqliteIdListAppend(IdList*, Token*);
void sqliteIdListAddAlias(IdList*, Token*);
void sqliteIdListDelete(IdList*);
@@ -500,7 +518,7 @@ Select *sqliteSelectNew(ExprList*,IdList*,Expr*,ExprList*,Expr*,ExprList*,
int,int,int);
void sqliteSelectDelete(Select*);
void sqliteDeleteFrom(Parse*, Token*, Expr*);
void sqliteUpdate(Parse*, Token*, ExprList*, Expr*);
void sqliteUpdate(Parse*, Token*, ExprList*, Expr*, int);
WhereInfo *sqliteWhereBegin(Parse*, IdList*, Expr*, int);
void sqliteWhereEnd(WhereInfo*);
void sqliteExprCode(Parse*, Expr*);