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Check for foreign key constraint errors prior to returning the results from

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a RETURNING clause.  See [forum:/forumpost/793beaf322|forum post 793beaf322].

FossilOrigin-Name: a818ba2ed635b91e279dde44236fc7446a33db2b46c9409b67021248c01bf4e5
This commit is contained in:
drh
2021-12-01 19:17:14 +00:00
parent 4baf43ff64
commit 3b26b2b56b
9 changed files with 52 additions and 35 deletions
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14
src/delete.c
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@@ -44,6 +44,16 @@ Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){
return pTab;
}
/* Generate byte-code that will report the number of rows modified
** by a DELETE, INSERT, or UPDATE statement.
*/
void sqlite3CodeChangeCount(Vdbe *v, int regCounter, const char *zColName){
sqlite3VdbeAddOp0(v, OP_FkCheck);
sqlite3VdbeAddOp2(v, OP_ResultRow, regCounter, 1);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zColName, SQLITE_STATIC);
}
/* Return true if table pTab is read-only.
**
** A table is read-only if any of the following are true:
@@ -619,9 +629,7 @@ void sqlite3DeleteFrom(
** invoke the callback function.
*/
if( memCnt ){
sqlite3VdbeAddOp2(v, OP_ChngCntRow, memCnt, 1);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows deleted", SQLITE_STATIC);
sqlite3CodeChangeCount(v, memCnt, "rows deleted");
}
delete_from_cleanup: