pan3793 commented on code in PR #7419:
URL: https://github.com/apache/kyuubi/pull/7419#discussion_r3154360134


##########
externals/kyuubi-jdbc-engine/src/main/scala/org/apache/kyuubi/engine/jdbc/operation/JdbcOperationManager.scala:
##########
@@ -91,7 +93,12 @@ class JdbcOperationManager(conf: KyuubiConf) extends 
OperationManager("JdbcOpera
       schemaName: String,
       tableName: String,
       tableTypes: util.List[String]): Operation = {
-    val query = dialect.getTablesQuery(catalogName, schemaName, tableName, 
tableTypes)
+    val effectiveSchema = if (StringUtils.isBlank(schemaName) || schemaName == 
"%") {
+      session.asInstanceOf[JdbcSessionImpl].effectiveDatabase.orNull
+    } else {
+      schemaName
+    }
+    val query = dialect.getTablesQuery(catalogName, effectiveSchema, 
tableName, tableTypes)

Review Comment:
   > migrating the dialect API to call DatabaseMetaData directly will touch 
every dialect, the operation manager, and every metadata test
   
   if we do that first, do we still need this patch?



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