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Enhance the OP_Found and OP_NotFound opcodes so that they can accept an

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array of registers as an unpacked record in addition to a record built
using OP_MakeRecord.  Use this to avoid OP_MakeRecord calls during IN
expression processing.

FossilOrigin-Name: b9eab885cd2ca1a1633329e7036c125e8dba62c5
This commit is contained in:
drh
2009-11-12 19:59:44 +00:00
parent e3365e6c37
commit 8cff69df11
11 changed files with 91 additions and 64 deletions
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4
src/select.c
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@@ -440,7 +440,7 @@ static void codeDistinct(
v = pParse->pVdbe;
r1 = sqlite3GetTempReg(pParse);
sqlite3VdbeAddOp3(v, OP_MakeRecord, iMem, N, r1);
sqlite3VdbeAddOp3(v, OP_Found, iTab, addrRepeat, r1);
sqlite3VdbeAddOp4Int(v, OP_Found, iTab, addrRepeat, r1, 0);
sqlite3VdbeAddOp2(v, OP_IdxInsert, iTab, r1);
sqlite3ReleaseTempReg(pParse, r1);
}
@@ -1670,7 +1670,7 @@ static int multiSelect(
sqlite3VdbeAddOp2(v, OP_Rewind, tab1, iBreak);
r1 = sqlite3GetTempReg(pParse);
iStart = sqlite3VdbeAddOp2(v, OP_RowKey, tab1, r1);
sqlite3VdbeAddOp3(v, OP_NotFound, tab2, iCont, r1);
sqlite3VdbeAddOp4Int(v, OP_NotFound, tab2, iCont, r1, 0);
sqlite3ReleaseTempReg(pParse, r1);
selectInnerLoop(pParse, p, p->pEList, tab1, p->pEList->nExpr,
0, -1, &dest, iCont, iBreak);