Add support for new lock syntax in MySQL8 #66
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Signed-off-by: Patrick Carnahan <[email protected]>
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patrickcarnahan
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Aug 7, 2023
| @@ -1004,7 +1004,7 @@ INPUT | |||
| SELECT 1 FOR SHARE UNION SELECT 2; | |||
| END | |||
| ERROR | |||
| syntax error at position 19 near 'SHARE' | |||
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this actually matches the error mysql8 provides when issuing the same query via explain:
mysql> explain select 1 for share union select 2;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'union select 2' at line 1
| @@ -6868,6 +6868,26 @@ FOR UPDATE | |||
| { | |||
| $$ = ForUpdateLock | |||
| } | |||
| | FOR UPDATE NOWAIT | |||
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not sure if there is a "better" way to do this, but i saw this type of pattern elsewhere so seemed to make sense.
|
I'm going to merge this as we tested this out and it was working as expected. 👍 |
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Description
This completes the work to enable the following syntax in vitess:
SELECT .. FOR SHARE (NOWAIT|SKIP LOCKED)SELECT .. FOR UPDATE (NOWAIT|SKIP LOCKED)The aim is to finish the work started in vitessio#5336, which added the keywords to the syntax but didn't modify the ast and other functions to handle it.
Related Issue(s)
Fixes vitessio#5249
Checklist
Deployment Notes