diff options
Diffstat (limited to 'src/where.c')
| -rw-r--r-- | src/where.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/where.c b/src/where.c index 7d8f05de3..836324156 100644 --- a/src/where.c +++ b/src/where.c @@ -3558,7 +3558,9 @@ WhereInfo *sqlite3WhereBegin( ** FROM clause entry that permits the lowest-cost, "optimal" scan. In ** this context an optimal scan is one that uses the same strategy ** for the given FROM clause entry as would be selected if the entry - ** were used as the innermost nested loop. + ** were used as the innermost nested loop. In other words, a table + ** is chosen such that the cost of running that table cannot be reduced + ** by waiting for other tables to run first. ** ** The second iteration is only performed if no optimal scan strategies ** were found by the first. This iteration is used to search for the |