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Changes to allow some multi-row UPDATE statements to avoid the two-pass

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approach.

FossilOrigin-Name: 46db23ccd116ce5b9d949f9293be8a2818411b46
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dan
2017-01-10 20:04:38 +00:00
parent f112f0b3de
commit f91c1318f4
11 changed files with 228 additions and 76 deletions
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5
src/btree.h
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@@ -249,9 +249,10 @@ int sqlite3BtreeCursorHasMoved(BtCursor*);
int sqlite3BtreeCursorRestore(BtCursor*, int*);
int sqlite3BtreeDelete(BtCursor*, u8 flags);
/* Allowed flags for the 2nd argument to sqlite3BtreeDelete() */
/* Allowed flags for sqlite3BtreeDelete() and sqlite3BtreeInsert() */
#define BTREE_SAVEPOSITION 0x02 /* Leave cursor pointing at NEXT or PREV */
#define BTREE_AUXDELETE 0x04 /* not the primary delete operation */
#define BTREE_APPEND 0x08 /* Insert is likely an append */
/* An instance of the BtreePayload object describes the content of a single
** entry in either an index or table btree.
@@ -282,7 +283,7 @@ struct BtreePayload {
};
int sqlite3BtreeInsert(BtCursor*, const BtreePayload *pPayload,
int bias, int seekResult);
int flags, int seekResult);
int sqlite3BtreeFirst(BtCursor*, int *pRes);
int sqlite3BtreeLast(BtCursor*, int *pRes);
int sqlite3BtreeNext(BtCursor*, int *pRes);