[MDEV-27788] avoid BLOB fetch in row_sel_sec_rec_is_for_blob() if BLOB's length is less then prefix length Created: 2022-02-09 Updated: 2023-10-30 |
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| Status: | Open |
| Project: | MariaDB Server |
| Component/s: | Storage Engine - InnoDB |
| Fix Version/s: | 11.5 |
| Type: | Task | Priority: | Major |
| Reporter: | Vladislav Lesin | Assignee: | Vladislav Lesin |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | None | ||
| Issue Links: |
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| Description |
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As marko noted in https://jira.mariadb.org/browse/MDEV-27746?focusedCommentId=213591&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-213591: "if the BTR_EXTERN_LEN is not at least as long as the column prefix in the secondary index record, a match should be impossible, and we can avoid fetching the BLOB." The "fix versions" can be changed. |