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[SPARK-30282][SQL][FOLLOWUP] SHOW TBLPROPERTIES should support views
### What changes were proposed in this pull request? This PR addresses two things: - `SHOW TBLPROPERTIES` should supports view (a regression introduced by #26921) - `SHOW TBLPROPERTIES` on a temporary view should return empty result (2.4 behavior instead of throwing `AnalysisException`. ### Why are the changes needed? It's a bug. ### Does this PR introduce any user-facing change? Yes, now `SHOW TBLPROPERTIES` works on views: ``` scala> sql("CREATE VIEW view TBLPROPERTIES('p1'='v1', 'p2'='v2') AS SELECT 1 AS c1") scala> sql("SHOW TBLPROPERTIES view").show(truncate=false) +---------------------------------+-------------+ |key |value | +---------------------------------+-------------+ |view.catalogAndNamespace.numParts|2 | |view.query.out.col.0 |c1 | |view.query.out.numCols |1 | |p2 |v2 | |view.catalogAndNamespace.part.0 |spark_catalog| |p1 |v1 | |view.catalogAndNamespace.part.1 |default | +---------------------------------+-------------+ ``` And for a temporary view: ``` scala> sql("CREATE TEMPORARY VIEW tview TBLPROPERTIES('p1'='v1', 'p2'='v2') AS SELECT 1 AS c1") scala> sql("SHOW TBLPROPERTIES tview").show(truncate=false) +---+-----+ |key|value| +---+-----+ +---+-----+ ``` ### How was this patch tested? Added tests. Closes #28375 from imback82/show_tblproperties_followup. Authored-by: Terry Kim <yuminkim@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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‎docs/sql-migration-guide.md

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@@ -59,7 +59,7 @@ license: |
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- In Spark 3.0, you can use `ADD FILE` to add file directories as well. Earlier you could add only single files using this command. To restore the behavior of earlier versions, set `spark.sql.legacy.addSingleFileInAddFile` to `true`.
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- In Spark 3.0, `SHOW TBLPROPERTIES` throws `AnalysisException` if the table does not exist. In Spark version 2.4 and below, this scenario caused `NoSuchTableException`. Also, `SHOW TBLPROPERTIES` on a temporary view causes `AnalysisException`. In Spark version 2.4 and below, it returned an empty result.
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- In Spark 3.0, `SHOW TBLPROPERTIES` throws `AnalysisException` if the table does not exist. In Spark version 2.4 and below, this scenario caused `NoSuchTableException`.
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- In Spark 3.0, `SHOW CREATE TABLE` always returns Spark DDL, even when the given table is a Hive SerDe table. For generating Hive DDL, use `SHOW CREATE TABLE AS SERDE` command instead.
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‎sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala

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@@ -3573,7 +3573,7 @@ class AstBuilder(conf: SQLConf) extends SqlBaseBaseVisitor[AnyRef] with Logging
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override def visitShowTblProperties(
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ctx: ShowTblPropertiesContext): LogicalPlan = withOrigin(ctx) {
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ShowTableProperties(
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UnresolvedTable(visitMultipartIdentifier(ctx.table)),
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UnresolvedTableOrView(visitMultipartIdentifier(ctx.table)),
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Option(ctx.key).map(visitTablePropertyKey))
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}
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‎sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/DDLParserSuite.scala

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@@ -2010,11 +2010,11 @@ class DDLParserSuite extends AnalysisTest {
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test("SHOW TBLPROPERTIES table") {
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comparePlans(
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parsePlan("SHOW TBLPROPERTIES a.b.c"),
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ShowTableProperties(UnresolvedTable(Seq("a", "b", "c")), None))
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ShowTableProperties(UnresolvedTableOrView(Seq("a", "b", "c")), None))
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comparePlans(
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parsePlan("SHOW TBLPROPERTIES a.b.c('propKey1')"),
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ShowTableProperties(UnresolvedTable(Seq("a", "b", "c")), Some("propKey1")))
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ShowTableProperties(UnresolvedTableOrView(Seq("a", "b", "c")), Some("propKey1")))
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}
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test("DESCRIBE FUNCTION") {

‎sql/core/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveSessionCatalog.scala

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@@ -562,6 +562,9 @@ class ResolveSessionCatalog(
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case ShowTableProperties(r: ResolvedTable, propertyKey) if isSessionCatalog(r.catalog) =>
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ShowTablePropertiesCommand(r.identifier.asTableIdentifier, propertyKey)
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case ShowTableProperties(r: ResolvedView, propertyKey) =>
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ShowTablePropertiesCommand(r.identifier.asTableIdentifier, propertyKey)
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case DescribeFunctionStatement(nameParts, extended) =>
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val functionIdent =
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parseSessionCatalogFunctionIdentifier(nameParts, "DESCRIBE FUNCTION")

‎sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala

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@@ -918,15 +918,20 @@ case class ShowTablePropertiesCommand(table: TableIdentifier, propertyKey: Optio
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}
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override def run(sparkSession: SparkSession): Seq[Row] = {
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val catalogTable = sparkSession.sessionState.catalog.getTableMetadata(table)
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propertyKey match {
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case Some(p) =>
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val propValue = catalogTable
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.properties
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.getOrElse(p, s"Table ${catalogTable.qualifiedName} does not have property: $p")
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Seq(Row(propValue))
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case None =>
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catalogTable.properties.map(p => Row(p._1, p._2)).toSeq
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val catalog = sparkSession.sessionState.catalog
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if (catalog.isTemporaryTable(table)) {
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Seq.empty[Row]
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} else {
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val catalogTable = catalog.getTableMetadata(table)
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propertyKey match {
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case Some(p) =>
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val propValue = catalogTable
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.properties
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.getOrElse(p, s"Table ${catalogTable.qualifiedName} does not have property: $p")
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Seq(Row(propValue))
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case None =>
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catalogTable.properties.map(p => Row(p._1, p._2)).toSeq
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}
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}
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}
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}

‎sql/core/src/test/resources/sql-tests/inputs/show-tblproperties.sql

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@@ -0,0 +1,26 @@
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-- create a table with properties
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CREATE TABLE tbl (a INT, b STRING, c INT) USING parquet
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TBLPROPERTIES('p1'='v1', 'p2'='v2');
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SHOW TBLPROPERTIES tbl;
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SHOW TBLPROPERTIES tbl("p1");
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SHOW TBLPROPERTIES tbl("p3");
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DROP TABLE tbl;
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-- create a view with properties
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CREATE VIEW view TBLPROPERTIES('p1'='v1', 'p2'='v2') AS SELECT 1 AS c1;
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SHOW TBLPROPERTIES view;
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SHOW TBLPROPERTIES view("p1");
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SHOW TBLPROPERTIES view("p3");
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DROP VIEW view;
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-- create a temporary view with properties
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CREATE TEMPORARY VIEW tv TBLPROPERTIES('p1'='v1') AS SELECT 1 AS c1;
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-- Properties for a temporary view should be empty
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SHOW TBLPROPERTIES tv;
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DROP VIEW tv;

‎sql/core/src/test/resources/sql-tests/results/show-tblproperties.sql.out

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-- Automatically generated by SQLQueryTestSuite
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-- Number of queries: 13
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-- !query
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CREATE TABLE tbl (a INT, b STRING, c INT) USING parquet
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TBLPROPERTIES('p1'='v1', 'p2'='v2')
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-- !query schema
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struct<>
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-- !query output
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-- !query
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SHOW TBLPROPERTIES tbl
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-- !query schema
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struct<key:string,value:string>
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-- !query output
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p1 v1
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p2 v2
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-- !query
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SHOW TBLPROPERTIES tbl("p1")
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-- !query schema
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struct<value:string>
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-- !query output
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v1
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-- !query
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SHOW TBLPROPERTIES tbl("p3")
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-- !query schema
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struct<value:string>
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-- !query output
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Table default.tbl does not have property: p3
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-- !query
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DROP TABLE tbl
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-- !query schema
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struct<>
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-- !query output
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-- !query
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CREATE VIEW view TBLPROPERTIES('p1'='v1', 'p2'='v2') AS SELECT 1 AS c1
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-- !query schema
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struct<>
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-- !query output
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-- !query
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SHOW TBLPROPERTIES view
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-- !query schema
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struct<key:string,value:string>
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-- !query output
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p1 v1
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p2 v2
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view.catalogAndNamespace.numParts 2
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view.catalogAndNamespace.part.0 spark_catalog
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view.catalogAndNamespace.part.1 default
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view.query.out.col.0 c1
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view.query.out.numCols 1
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-- !query
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SHOW TBLPROPERTIES view("p1")
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-- !query schema
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struct<value:string>
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-- !query output
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v1
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-- !query
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SHOW TBLPROPERTIES view("p3")
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-- !query schema
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struct<value:string>
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-- !query output
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Table default.view does not have property: p3
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-- !query
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DROP VIEW view
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-- !query schema
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struct<>
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-- !query output
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-- !query
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CREATE TEMPORARY VIEW tv TBLPROPERTIES('p1'='v1') AS SELECT 1 AS c1
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-- !query schema
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struct<>
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-- !query output
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-- !query
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SHOW TBLPROPERTIES tv
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-- !query schema
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struct<key:string,value:string>
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-- !query output
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-- !query
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DROP VIEW tv
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-- !query schema
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struct<>
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-- !query output
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‎sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveCommandSuite.scala

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@@ -179,7 +179,7 @@ class HiveCommandSuite extends QueryTest with SQLTestUtils with TestHiveSingleto
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val message = intercept[AnalysisException] {
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sql("SHOW TBLPROPERTIES badtable")
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}.getMessage
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assert(message.contains("Table not found: badtable"))
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assert(message.contains("Table or view not found: badtable"))
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// When key is not found, a row containing the error is returned.
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checkAnswer(
@@ -193,21 +193,6 @@ class HiveCommandSuite extends QueryTest with SQLTestUtils with TestHiveSingleto
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checkAnswer(sql("SHOW TBLPROPERTIES parquet_tab2('`prop2Key`')"), Row("prop2Val"))
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}
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test("show tblproperties for spark temporary table - AnalysisException is thrown") {
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withTempView("parquet_temp") {
198-
sql(
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"""
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|CREATE TEMPORARY VIEW parquet_temp (c1 INT, c2 STRING)
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|USING org.apache.spark.sql.parquet.DefaultSource
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""".stripMargin)
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val message = intercept[AnalysisException] {
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sql("SHOW TBLPROPERTIES parquet_temp")
206-
}.getMessage
207-
assert(message.contains("parquet_temp is a temp view not table"))
208-
}
209-
}
210-
211196
Seq(true, false).foreach { local =>
212197
val loadQuery = if (local) "LOAD DATA LOCAL" else "LOAD DATA"
213198
test(loadQuery) {

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