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https://issues.apache.org/jira/browse/DRILL-2283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krystal closed DRILL-2283.
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Verified that the following query returns no match or false:
select * from INFORMATION_SCHEMA.`COLUMNS` where DATA_TYPE='IN';
> Internal VARCHAR(1) breaks INFO._SCHEMA table string comparison
> ---------------------------------------------------------------
>
> Key: DRILL-2283
> URL: https://issues.apache.org/jira/browse/DRILL-2283
> Project: Apache Drill
> Issue Type: Bug
> Components: Metadata
> Reporter: Daniel Barclay (Drill)
> Assignee: Parth Chandra
> Labels: no_verified_test
> Fix For: 0.8.0
>
> Attachments: DRILL-2283.1.patch.txt
>
>
> In {{org.apache.drill.exec.store.ischema.InfoSchemaTable}}, method
> {{getRelDataType(...)}} calls a version of
> {{RelDataTypeFactory.createSqlType(...)}} that sets the type of strings to
> {{VARCHAR(1)}} rather than {{VARCHAR(}}<some big number>{{)}}.
> This breaks string comparison. (For example, "{{DATA_TYPE = 'IN'}}" returns
> true when the {{INFORMATION_SCHEMA.COLUMNS.DATA_TYPE}} value is "INTEGER".)
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