rdblue commented on a change in pull request #25247: [SPARK-28319][SQL]
Implement SHOW TABLES for Data Source V2 Tables
URL: https://github.com/apache/spark/pull/25247#discussion_r310248633
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/sources/v2/DataSourceV2SQLSuite.scala
##########
@@ -1646,4 +1651,70 @@ class DataSourceV2SQLSuite extends QueryTest with
SharedSQLContext with BeforeAn
}
}
}
+
+ test("ShowTables using v2 catalog") {
+ spark.sql("CREATE TABLE testcat.db.table_name (id bigint, data string)
USING foo")
+ spark.sql("CREATE TABLE testcat.n1.n2.db.table_name (id bigint, data
string) USING foo")
+
+ {
+ val tables = runShowTablesSql("SHOW TABLES FROM testcat.db")
+ assert(tables === Seq(Row("db", "table_name", false)))
+ }
+ {
+ val tables = runShowTablesSql("SHOW TABLES FROM testcat.n1.n2.db")
+ assert(tables === Seq(Row("n1.n2.db", "table_name", false)))
+ }
+ }
+
+ test("ShowTables using v2 catalog with a pattern") {
+ spark.sql("CREATE TABLE testcat.db.table (id bigint, data string) USING
foo")
+ spark.sql("CREATE TABLE testcat.db.table_name_1 (id bigint, data string)
USING foo")
+ spark.sql("CREATE TABLE testcat.db.table_name_2 (id bigint, data string)
USING foo")
+ spark.sql("CREATE TABLE testcat.db2.table_name_2 (id bigint, data string)
USING foo")
+
+ {
+ val tables = runShowTablesSql("SHOW TABLES FROM testcat.db")
+ assert(tables === Seq(
+ Row("db", "table", false),
+ Row("db", "table_name_1", false),
+ Row("db", "table_name_2", false)))
+ }
+ {
+ val tables = runShowTablesSql("SHOW TABLES FROM testcat.db LIKE
'*name*'")
+ assert(tables === Seq(
+ Row("db", "table_name_1", false),
+ Row("db", "table_name_2", false)))
+ }
+ {
+ val tables = runShowTablesSql("SHOW TABLES FROM testcat.db LIKE '*2'")
+ assert(tables === Seq(Row("db", "table_name_2", false)))
+ }
+ }
+
+ test("ShowTables: using v2 catalog, db doesn't exist") {
+ val tables = runShowTablesSql("SHOW TABLES FROM testcat.unknown")
+ assert(tables.isEmpty)
+ }
+
+ test("ShowTables: db is not specified - fallback to v1") {
Review comment:
This isn't quite accurate. If db is not specified, then it should have an
analysis exception if there is a default catalog. If there is not a default
catalog, it should fall back to v1.
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