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Improved comments. Slightly tighter implementation, but no big changes.

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FossilOrigin-Name: a1b3f28569f2a8d82b2931527fdfe191b421f3e1ea18ee30e04211e1ad645993
This commit is contained in:
drh
2018-01-12 23:18:38 +00:00
parent ce2fbd1b02
commit 41fb367a2c
6 changed files with 34 additions and 21 deletions
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8
src/update.c
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@@ -828,7 +828,7 @@ static void updateVirtualTable(
sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i);
}else{
sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i);
sqlite3VdbeChangeP5(v, 1);
sqlite3VdbeChangeP5(v, 1); /* Enable sqlite3_vtab_nochange() */
}
}
if( HasRowid(pTab) ){
@@ -863,7 +863,11 @@ static void updateVirtualTable(
/* Create a record from the argument register contents and insert it into
** the ephemeral table. */
sqlite3VdbeAddOp3(v, OP_MakeRecord, regArg, nArg, regRec);
sqlite3VdbeChangeP5(v, 2);
#ifdef SQLITE_DEBUG
/* Signal an assert() within OP_MakeRecord that it is allowed to
** accept no-change records with serial_type 10 */
sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG_MAGIC);
#endif
sqlite3VdbeAddOp2(v, OP_NewRowid, ephemTab, regRowid);
sqlite3VdbeAddOp3(v, OP_Insert, ephemTab, regRec, regRowid);
}