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When preparing an UPDATE statement, avoid generating VDBE code for those foreign key related actions and constraint checks that may be seen to be unnecessary by considering the subset of table columns potentially modified by the UPDATE.

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FossilOrigin-Name: e940b5de49baa1d6a4cf859fbbc0e0df86ac5dbf
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dan
2013-09-05 18:40:29 +00:00
parent 74dade2155
commit 8ff2d9561a
9 changed files with 169 additions and 48 deletions
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4
src/delete.c
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@@ -536,7 +536,7 @@ void sqlite3GenerateRowDelete(
/* Do FK processing. This call checks that any FK constraints that
** refer to this table (i.e. constraints attached to other tables)
** are not violated by deleting this row. */
sqlite3FkCheck(pParse, pTab, iOld, 0);
sqlite3FkCheck(pParse, pTab, iOld, 0, 0, 0);
}
/* Delete the index and table entries. Skip this step if pTab is really
@@ -553,7 +553,7 @@ void sqlite3GenerateRowDelete(
/* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to
** handle rows (possibly in other tables) that refer via a foreign key
** to the row just deleted. */
sqlite3FkActions(pParse, pTab, 0, iOld);
sqlite3FkActions(pParse, pTab, 0, iOld, 0, 0);
/* Invoke AFTER DELETE trigger programs. */
sqlite3CodeRowTrigger(pParse, pTrigger,