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5 check-ins tagged with "query-planner-fix"
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2014-08-08
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| 17:25 | Fix a buffer overrun in the previous commit. (Closed-Leaf check-in: 43c59c85 user: dan tags: query-planner-fix) | |
| 16:52 | Because SQLite internally calculates query plan costs using a logarithmic scale, very large estimated sorting costs can cause all other estimated costs to be rounded down to zero. In these cases break ties between plans with the same total cost by comparing the costs with sorting excluded. This is an alternative fix for the problem addressed by [2af630c572]. (check-in: 299b9570 user: dan tags: query-planner-fix) | |
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2014-08-07
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| 20:37 | Clarify the computation of compatible isOrdered by in the plan solver of the query planner. (Closed-Leaf check-in: b5e8fd57 user: drh tags: query-planner-fix) | |
| 20:25 | Remove the extraneous debugging printf() from the previous check-in. (check-in: 8f04d2c0 user: drh tags: query-planner-fix) | |
| 16:50 | Oops! This check-in was on trunk. But it contains a debugging printf(). Original comment: When the estimated cost to do a sort overwhelms the estimated cost to do individual table lookups, make sure that the table lookup costs are still taken into consideration when selecting the lookup algorithm. (check-in: ec5d84ba user: drh tags: query-planner-fix) | |