cloud-fan commented on code in PR #36586:
URL: https://github.com/apache/spark/pull/36586#discussion_r875383670


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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/ShowTablesExec.scala:
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@@ -38,12 +38,14 @@ case class ShowTablesExec(
     val rows = new ArrayBuffer[InternalRow]()
 
     val tables = catalog.listTables(namespace.toArray)
+    // how to make sure the table is matched here? What is pattern and how to 
use it?

Review Comment:
   You can look for Hive docs about the syntax of the pattern string. `*` 
matches everything.



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