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Use an iterator for the index loop in sqlite3GenerateConstraintChecks().

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The idea is that this iterator can be enhanced to traverse the indexes in
any order, as required by multi-index UPSERT.

FossilOrigin-Name: 64a4a91ecc5dcde3fa07d3cf038c74b9ede63d36628ecfb35203a9dfbbfe113c
This commit is contained in:
drh
2020-12-10 20:31:25 +00:00
parent 91f2717f22
commit daf2761c62
5 changed files with 75 additions and 36 deletions
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src/sqliteInt.h
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@@ -3080,7 +3080,7 @@ struct Upsert {
Upsert *pNextUpsert; /* Next ON CONFLICT clause in the list */
/* Above this point is the parse tree for the ON CONFLICT clauses.
** The next group of fields stores intermediate data. */
Index *pIdxList;
void *pToFree; /* Free memory when deleting the Upsert object */
/* All fields above are owned by the Upsert object and must be freed
** when the Upsert is destroyed. The fields below are used to transfer
** information from the INSERT processing down into the UPDATE processing