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Extend the upsert syntax to allow a WHERE clause on the UPDATE.

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FossilOrigin-Name: e4396c540a22fbc087a01050a32bfad514259d700c2381d7ac912580d7dca00f
This commit is contained in:
drh
2018-04-12 17:28:06 +00:00
parent 6cd7d489db
commit dab0eb58d7
5 changed files with 32 additions and 27 deletions
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5
src/sqliteInt.h
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@@ -2717,6 +2717,7 @@ struct NameContext {
struct Upsert {
ExprList *pUpsertTarget; /* Optional description of conflicting index */
ExprList *pUpsertSet; /* The SET clause from an ON CONFLICT UPDATE */
Expr *pUpsertWhere; /* WHERE clause for the ON CONFLICT UPDATE */
Upsert *pUpsertNext; /* Next ON CONFLICT clause in the list */
};
@@ -4270,11 +4271,11 @@ const char *sqlite3JournalModename(int);
#define sqlite3WithDelete(x,y)
#endif
#ifndef SQLITE_OMIT_UPSERT
Upsert *sqlite3UpsertNew(sqlite3*,Upsert*,ExprList*,ExprList*);
Upsert *sqlite3UpsertNew(sqlite3*,Upsert*,ExprList*,ExprList*,Expr*);
void sqlite3UpsertDelete(sqlite3*,Upsert*);
Upsert *sqlite3UpsertDup(sqlite3*,Upsert*);
#else
#define sqlite3UpsertNew(x,y,z) ((Upsert*)0)
#define sqlite3UpsertNew(x,y,z,w) ((Upsert*)0)
#define sqlite3UpsertDelete(x,y)
#define sqlite3UpsertDup(x,y) ((Upsert*)0)
#endif