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Add the "nexec" and "ncycle" columns to the bytecode virtual table. For accessing counters collected when SQLITE_DBCONFIG_STMT_SCANSTATUS is enabled.

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FossilOrigin-Name: f7b163a319bee9e935a4abf0bd87e16c9974cba5ae75b0cbba63c9da168f2006
This commit is contained in:
dan
2023-06-30 18:59:10 +00:00
parent 24b368da8d
commit aec0aa83a9
3 changed files with 33 additions and 14 deletions
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29
src/vdbevtab.c
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@@ -69,6 +69,8 @@ static int bytecodevtabConnect(
"p5 INT,"
"comment TEXT,"
"subprog TEXT,"
"nexec INT,"
"ncycle INT,"
"stmt HIDDEN"
");",
@@ -231,7 +233,7 @@ static int bytecodevtabColumn(
}
}
}
i += 10;
i += 20;
}
}
switch( i ){
@@ -281,16 +283,31 @@ static int bytecodevtabColumn(
}
break;
}
case 10: /* tables_used.type */
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
case 9: /* nexec */
sqlite3_result_int(ctx, pCur->aOp[0].nExec);
break;
case 10: /* ncycle */
sqlite3_result_int(ctx, pCur->aOp[0].nCycle);
break;
#else
case 9: /* nexec */
case 10: /* ncycle */
sqlite3_result_int(ctx, 0);
break;
#endif
case 20: /* tables_used.type */
sqlite3_result_text(ctx, pCur->zType, -1, SQLITE_STATIC);
break;
case 11: /* tables_used.schema */
case 21: /* tables_used.schema */
sqlite3_result_text(ctx, pCur->zSchema, -1, SQLITE_STATIC);
break;
case 12: /* tables_used.name */
case 22: /* tables_used.name */
sqlite3_result_text(ctx, pCur->zName, -1, SQLITE_STATIC);
break;
case 13: /* tables_used.wr */
case 23: /* tables_used.wr */
sqlite3_result_int(ctx, pOp->opcode==OP_OpenWrite);
break;
}
@@ -364,7 +381,7 @@ static int bytecodevtabBestIndex(
int rc = SQLITE_CONSTRAINT;
struct sqlite3_index_constraint *p;
bytecodevtab *pVTab = (bytecodevtab*)tab;
int iBaseCol = pVTab->bTablesUsed ? 4 : 8;
int iBaseCol = pVTab->bTablesUsed ? 4 : 10;
pIdxInfo->estimatedCost = (double)100;
pIdxInfo->estimatedRows = 100;
pIdxInfo->idxNum = 0;