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Merge branch 'tc-db-docs' into 'master'

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Add some more database docs

See merge request gitlab-org/gitlab-ce!28784
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Marcia Ramos 2019-06-03 15:43:30 +00:00
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doc/development/understanding_explain_plans.md
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@ -80,8 +80,9 @@ Planning time: 2.861 ms
Execution time: 3428.596 ms
```
For more information, refer to the official [EXPLAIN
documentation](https://www.postgresql.org/docs/current/static/sql-explain.html).
For more information, refer to the official
[`EXPLAIN` documentation](https://www.postgresql.org/docs/current/sql-explain.html)
and [using `EXPLAIN` guide](https://www.postgresql.org/docs/current/using-explain.html).
## Nodes
@ -674,3 +675,9 @@ For more information about the available options, run:
```
/chatops run explain --help
```
## Further reading
A more extensive guide on understanding query plans can be found in
the [presentation](https://www.dalibo.org/_media/understanding_explain.pdf)
from [Dalibo.org](https://www.dalibo.org/en/).