Dipeshsharma2005 opened a new pull request, #16987: URL: https://github.com/apache/iotdb/pull/16987
### Description This PR fixes inconsistent behavior of the `CONTAINS` operator when filtering timeseries by TAGS. Previously, `SHOW TIMESERIES WHERE TAGS(k) CONTAINS 'value'` performed case-sensitive matching, which differed from the case-insensitive behavior used for timeseries name filtering. This made tag-based metadata searches less intuitive and required users to know the exact casing of tag values. This change normalizes tag values during CONTAINS evaluation, making tag filtering case-insensitive and consistent with other metadata filters. ### Changes - Updated tag CONTAINS matching logic to be case-insensitive - Aligned tag filtering semantics with timeseries CONTAINS behavior ### Motivation - Improves usability of metadata discovery - Ensures consistent query behavior across schema filters ### Related Issue Fixes #16876 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
