Reuse quick_condition_rows in fanout computations
(MDEV-446)
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| Status: | Closed |
| Project: | MariaDB Server |
| Component/s: | None |
| Affects Version/s: | 10.0.1 |
| Fix Version/s: | 10.0.1 |
| Type: | Technical task | Priority: | Major |
| Reporter: | Timour Katchaounov (Inactive) | Assignee: | Timour Katchaounov (Inactive) |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Description |
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Currently JOIN_TAB::records_read is of type ha_rows. This is an integer type, which prevents proper selectivity and rows estimates. This trivial task has been factored out in order to separate the changes in EXPLAIN due to this change compared to changes in EXPLAIN due to added selectivity estimates. |
| Comments |
| Comment by Timour Katchaounov (Inactive) [ 2012-11-15 ] |
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Approved by Sergey, pushed to 10.0. |
[MDEV-3858]