Backport to 2.18.x: #7637: Allow EXPLAIN in read-only mode #7641
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This is an automated backport of #7637: Allow EXPLAIN in read-only mode.
The original issue is #7635.
This PR will be merged automatically after all the relevant CI checks pass. If this fix should not be backported, or will be backported manually, just close this PR. You can use the backport branch to add your changes, it won't be modified automatically anymore.
For more details, please see the documentation
Original description
Allow EXPLAIN in read-only mode
Using
EXPLAIN
whentransaction_read_only
is set toon
fails with an error. This is fixed by explicitly setting thecheck_read_only
flag.Fixes
#7635