Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17067#discussion_r103849606
--- Diff: sql/core/src/test/resources/sql-tests/inputs/columnresolution.sql
---
@@ -0,0 +1,84 @@
+-- Tests covering different scenarios with qualified column names
+-- Scenario: column resolution scenarios with datasource table
+CREATE DATABASE mydb1;
+USE mydb1;
+CREATE TABLE t1 USING parquet AS SELECT 1 AS i1;
+
+CREATE DATABASE mydb2;
+USE mydb2;
+CREATE TABLE t1 USING parquet AS SELECT 20 AS i1;
+
+USE mydb1;
+SELECT i1 FROM t1;
+SELECT i1 FROM mydb1.t1;
+SELECT t1.i1 FROM t1;
+SELECT t1.i1 FROM mydb1.t1;
+
+-- TODO: Support this scenario
+SELECT mydb1.t1.i1 FROM t1;
+-- TODO: Support this scenario
+SELECT mydb1.t1.i1 FROM mydb1.t1;
+
+USE mydb2;
+SELECT i1 FROM t1;
+SELECT i1 FROM mydb1.t1;
+SELECT t1.i1 FROM t1;
+SELECT t1.i1 FROM mydb1.t1;
+-- TODO: Support this scenario
+SELECT mydb1.t1.i1 FROM mydb1.t1;
+
+-- Scenario: resolve fully qualified table name in star expansion
+USE mydb1;
+SELECT t1.* FROM t1;
+SELECT mydb1.t1.* FROM mydb1.t1;
+SELECT t1.* FROM mydb1.t1;
+USE mydb2;
+SELECT t1.* FROM t1;
+-- TODO: Support this scenario
+SELECT mydb1.t1.* FROM mydb1.t1;
+SELECT t1.* FROM mydb1.t1;
+SELECT a.* FROM mydb1.t1 AS a;
+
+-- Scenario: resolve in case of subquery
+
+USE mydb1;
+CREATE TABLE t3 USING parquet AS SELECT * FROM VALUES (4,1), (3,1) AS
t3(c1, c2);
+CREATE TABLE t4 USING parquet AS SELECT * FROM VALUES (4,1), (2,1) AS
t4(c2, c3);
+
+SELECT * FROM t3 WHERE c1 IN (SELECT c2 FROM t4 WHERE t4.c3 = t3.c2);
+
+-- TODO: Support this scenario
+SELECT * FROM mydb1.t3 WHERE c1 IN
+ (SELECT mydb1.t4.c2 FROM mydb1.t4 WHERE mydb1.t4.c3 = mydb1.t3.c2);
+
+-- Scenario: column resolution scenarios in join queries
+SET spark.sql.crossJoin.enabled = true;
+
+-- TODO: Support this scenario
+SELECT mydb1.t1.i1 FROM t1, mydb2.t1;
+
+-- TODO: Support this scenario
+SELECT mydb1.t1.i1 FROM mydb1.t1, mydb2.t1;
+
+USE mydb2;
+-- TODO: Support this scenario
+SELECT mydb1.t1.i1 FROM t1, mydb1.t1;
+
+-- Scenario: Table with struct column
+USE mydb1;
+CREATE TABLE t5(i1 INT, t5 STRUCT<i1:INT, i2:INT>) USING parquet;
+INSERT INTO t5 VALUES(1, (2, 3));
+SELECT t5.i1 FROM t5;
+SELECT t5.t5.i1 FROM t5;
+SELECT t5.t5.i1 FROM mydb1.t5;
--- End diff --
Add two cases for verifying `*`
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
