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Automatically generate transient indices for tables in joins that would

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otherwise have to use a full table scan.

FossilOrigin-Name: 1b2a04125f964e14f3fb90171c5ab86a0641d1c9
This commit is contained in:
drh
2010-04-06 15:57:05 +00:00
parent 25d3adbb6a
commit 8b307fbfa0
7 changed files with 214 additions and 25 deletions
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2
src/prepare.c
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@@ -579,6 +579,7 @@ static int sqlite3Prepare(
sqlite3VtabUnlockList(db);
pParse->db = db;
pParse->nQueryLoop = (double)1;
if( nBytes>=0 && (nBytes==0 || zSql[nBytes-1]!=0) ){
char *zSqlCopy;
int mxLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH];
@@ -600,6 +601,7 @@ static int sqlite3Prepare(
}else{
sqlite3RunParser(pParse, zSql, &zErrMsg);
}
assert( 1==(int)pParse->nQueryLoop );
if( db->mallocFailed ){
pParse->rc = SQLITE_NOMEM;