[jira] [Commented] (DRILL-8281) Info schema LIKE with ESCAPE push down bug

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-8281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17581968#comment-17581968 ] 

ASF GitHub Bot commented on DRILL-8281:
---------------------------------------

jnturton opened a new pull request, #2627:
URL: https://github.com/apache/drill/pull/2627

   # [DRILL-8281](https://issues.apache.org/jira/browse/DRILL-8281): Info schema LIKE with ESCAPE push down bug
   
   ## Description
   [DRILL-8057](https://issues.apache.org/jira/browse/DRILL-8057) brought in a regression whereby info schema LIKE patterns containing an escape character are not correctly processed. For example if a storage plugin called dfs_foo (note the presence of the special '_') is present then the following query wrongly returns no records.
   ```
   apache drill> show databases where schema_name like 'dfs^_foo.%' escape '^';
   No rows selected (2.305 seconds)
   ```
   This PR makes schema path prefix comparison use RegexpUtil.SqlPatternInfo#getSimplePatternString when comparing prefixes so that escape characters are correctly processed.
   
   ## Documentation
   N/A
   
   ## Testing
   TestInfoSchema#likePatternWithEscapeChar
   




> Info schema LIKE with ESCAPE push down bug
> ------------------------------------------
>
>                 Key: DRILL-8281
>                 URL: https://issues.apache.org/jira/browse/DRILL-8281
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Information Schema
>    Affects Versions: 1.20.2
>            Reporter: James Turton
>            Assignee: James Turton
>            Priority: Minor
>             Fix For: 1.20.3
>
>
> DRILL-8057 brought in a regression whereby info schema LIKE patterns containing an escape character are not correctly processed. For example if a storage plugin called dfs_foo (note the presence of the special '_') is present then the following query wrongly returns no records.
> {code:java}
> apache drill> show databases where schema_name like 'dfs^_foo.%' escape '^';
> No rows selected (2.305 seconds){code}



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