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Add code to maintain indexes with expression arguments across DELETE, INSERT,

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and UPDATE statements.  Legacy tests pass, but the new code paths are still
largely untested.  The query planner currently makes no effort to use
expression indexes.

FossilOrigin-Name: efaabdb71626bdc03768e87e186c72f6f3da75b2
This commit is contained in:
drh
2015-08-25 16:57:52 +00:00
parent a514b8eb0c
commit 1f9ca2c84c
14 changed files with 146 additions and 67 deletions
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7
src/analyze.c
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@@ -1186,6 +1186,7 @@ static void analyzeOneTable(
regKey = sqlite3GetTempRange(pParse, pPk->nKeyCol);
for(j=0; j<pPk->nKeyCol; j++){
k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]);
assert( k>=0 && k<pTab->nCol );
sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j);
VdbeComment((v, "%s", pTab->aCol[pPk->aiColumn[j]].zName));
}
@@ -1235,12 +1236,10 @@ static void analyzeOneTable(
** be taken */
VdbeCoverageNeverTaken(v);
#ifdef SQLITE_ENABLE_STAT3
sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur,
pIdx->aiColumn[0], regSample);
sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, 0, regSample);
#else
for(i=0; i<nCol; i++){
i16 iCol = pIdx->aiColumn[i];
sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, iCol, regCol+i);
sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, i, regCol+i);
}
sqlite3VdbeAddOp3(v, OP_MakeRecord, regCol, nCol, regSample);
#endif