beliefer commented on a change in pull request #32442:
URL: https://github.com/apache/spark/pull/32442#discussion_r629016341



##########
File path: sql/core/src/test/resources/sql-tests/inputs/cte-ddl.sql
##########
@@ -0,0 +1,65 @@
+-- Test data.
+CREATE NAMESPACE IF NOT EXISTS query_ddl_namespace;
+USE NAMESPACE query_ddl_namespace;
+CREATE TABLE test_show_tables(a INT, b STRING, c INT) using parquet;
+CREATE TABLE test_show_table_properties (a INT, b STRING, c INT) USING parquet 
TBLPROPERTIES('p1'='v1', 'p2'='v2');
+CREATE TABLE test_show_partitions(a String, b Int, c String, d String) USING 
parquet PARTITIONED BY (c, d);
+ALTER TABLE test_show_partitions ADD PARTITION (c='Us', d=1);
+ALTER TABLE test_show_partitions ADD PARTITION (c='Us', d=2);
+ALTER TABLE test_show_partitions ADD PARTITION (c='Cn', d=1);
+CREATE VIEW view_1 AS SELECT * FROM test_show_tables;
+CREATE VIEW view_2 AS SELECT * FROM test_show_tables WHERE c=1;
+CREATE TEMPORARY VIEW test_show_views(e int) USING parquet;
+CREATE GLOBAL TEMP VIEW test_global_show_views AS SELECT 1 as col1;
+
+-- SHOW NAMESPACES
+SHOW NAMESPACES;
+WITH s AS (SHOW NAMESPACES) SELECT * FROM s;
+WITH s AS (SHOW NAMESPACES) SELECT * FROM s WHERE namespace = 
'query_ddl_namespace';
+WITH s(n) AS (SHOW NAMESPACES) SELECT * FROM s WHERE n = 'query_ddl_namespace';
+
+-- SHOW TABLES
+SHOW TABLES;
+WITH s AS (SHOW TABLES) SELECT * FROM s;
+WITH s AS (SHOW TABLES) SELECT * FROM s WHERE tableName = 'test_show_tables';
+WITH s(ns, tn, t) AS (SHOW TABLES) SELECT * FROM s WHERE tn = 
'test_show_tables';

Review comment:
       OK




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