Warning
SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.
LMV_ JOIN_ OPTIMIZATION_ RESULTS
This view contains information about the results of join optimization operations.
Column Name |
Description |
---|---|
|
The activity name of the query plan. |
|
The text of the query. |
|
The name of the related database. |
|
The name of a table within a given join. |
|
Whether or not a given join is local. |
|
The sequence number of this row among the rows for this query plan. |
|
The number of tables included in a given join. |
|
The position of the table in its join. |
|
The estimated fraction of rows that satisfy the filter conditions on a given table (not including conditions involving multiple tables, i. |
|
The estimated fraction of rows that satisfy the join conditions. |
|
The estimated rowcount of the table. |
|
The estimated rowcount of the table after filter conditions on this table only. |
|
The estimated rowcount of the join so far after joining this table. |
|
The estimated cost of executing a given join so far, according to the optimizer’s cost model. |
Last modified: August 29, 2022