[SPARK-29526][SQL] UNCACHE TABLE should look up catalog/table like v2 commands

sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4

@@ -207,7 +207,7 @@ statement
     | REFRESH (STRING | .*?)                                           #refreshResource
     | CACHE LAZY? TABLE multipartIdentifier
         (OPTIONS options=tablePropertyList)? (AS? query)?              #cacheTable
-    | UNCACHE TABLE (IF EXISTS)? tableIdentifier                       #uncacheTable
+    | UNCACHE TABLE (IF EXISTS)? multipartIdentifier                   #uncacheTable
     | CLEAR CACHE                                                      #clearCache
     | LOAD DATA LOCAL? INPATH path=STRING OVERWRITE? INTO TABLE
         tableIdentifier partitionSpec?                                 #loadData

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala

@@ -2793,6 +2793,13 @@ class AstBuilder(conf: SQLConf) extends SqlBaseBaseVisitor[AnyRef] with Logging
     CacheTableStatement(tableName, query, ctx.LAZY != null, options)
   }
 
+  /**
+   * Create an [[UncacheTableStatement]] logical plan.
+   */
+  override def visitUncacheTable(ctx: UncacheTableContext): LogicalPlan = withOrigin(ctx) {
+    UncacheTableStatement(visitMultipartIdentifier(ctx.multipartIdentifier), ctx.EXISTS != null)
+  }
+
   /**
    * Create a [[TruncateTableStatement]] command.
    *

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/statements.scala

@@ -339,6 +339,13 @@ case class CacheTableStatement(
     isLazy: Boolean,
     options: Map[String, String]) extends ParsedStatement
 
+/**
+ * An UNCACHE TABLE statement, as parsed from SQL
+ */
+case class UncacheTableStatement(
+    tableName: Seq[String],
+    ifExists: Boolean) extends ParsedStatement
+
 /**
  * A TRUNCATE TABLE statement, as parsed from SQL
  */

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/DDLParserSuite.scala

@@ -1039,13 +1039,13 @@ class DDLParserSuite extends AnalysisTest {
       "missing 'COLUMNS' at '<EOF>'")
   }
 
-  test("MSCK REPAIR table") {
+  test("MSCK REPAIR TABLE") {
     comparePlans(
       parsePlan("MSCK REPAIR TABLE a.b.c"),
       RepairTableStatement(Seq("a", "b", "c")))
   }
 
-  test("CACHE table") {
+  test("CACHE TABLE") {
     comparePlans(
       parsePlan("CACHE TABLE a.b.c"),
       CacheTableStatement(Seq("a", "b", "c"), None, false, Map.empty))
@@ -1062,6 +1062,16 @@ class DDLParserSuite extends AnalysisTest {
       "It is not allowed to add catalog/namespace prefix a.b")
   }
 
+  test("UNCACHE TABLE") {
+    comparePlans(
+      parsePlan("UNCACHE TABLE a.b.c"),
+      UncacheTableStatement(Seq("a", "b", "c"), ifExists = false))
+
+    comparePlans(
+      parsePlan("UNCACHE TABLE IF EXISTS a.b.c"),
+      UncacheTableStatement(Seq("a", "b", "c"), ifExists = true))
+  }
+
   test("TRUNCATE table") {
     comparePlans(
       parsePlan("TRUNCATE TABLE a.b.c"),
@@ -1098,7 +1108,7 @@ class DDLParserSuite extends AnalysisTest {
     comparePlans(parsed5, expected5)
   }
 
-  test("REFRESH TABLE table") {
+  test("REFRESH TABLE") {
     comparePlans(
       parsePlan("REFRESH TABLE a.b.c"),
       RefreshTableStatement(Seq("a", "b", "c")))

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

@@ -24,7 +24,7 @@ import org.apache.spark.sql.catalyst.plans.logical._
 import org.apache.spark.sql.catalyst.rules.Rule
 import org.apache.spark.sql.connector.catalog.{CatalogManager, CatalogPlugin, LookupCatalog, TableChange, V1Table}
 import org.apache.spark.sql.connector.expressions.Transform
-import org.apache.spark.sql.execution.command.{AlterTableAddColumnsCommand, AlterTableRecoverPartitionsCommand, AlterTableSetLocationCommand, AlterTableSetPropertiesCommand, AlterTableUnsetPropertiesCommand, AnalyzeColumnCommand, AnalyzePartitionCommand, AnalyzeTableCommand, CacheTableCommand, CreateDatabaseCommand, DescribeColumnCommand, DescribeTableCommand, DropTableCommand, ShowPartitionsCommand, ShowTablesCommand, TruncateTableCommand}
+import org.apache.spark.sql.execution.command.{AlterTableAddColumnsCommand, AlterTableRecoverPartitionsCommand, AlterTableSetLocationCommand, AlterTableSetPropertiesCommand, AlterTableUnsetPropertiesCommand, AnalyzeColumnCommand, AnalyzePartitionCommand, AnalyzeTableCommand, CacheTableCommand, CreateDatabaseCommand, DescribeColumnCommand, DescribeTableCommand, DropTableCommand, ShowPartitionsCommand, ShowTablesCommand, TruncateTableCommand, UncacheTableCommand}
 import org.apache.spark.sql.execution.datasources.{CreateTable, DataSource, RefreshTable}
 import org.apache.spark.sql.execution.datasources.v2.FileDataSourceV2
 import org.apache.spark.sql.internal.SQLConf
@@ -303,6 +303,10 @@ class ResolveSessionCatalog(
       val v1TableName = parseV1Table(tableName, "CACHE TABLE")
       CacheTableCommand(v1TableName.asTableIdentifier, plan, isLazy, options)
 
+    case UncacheTableStatement(tableName, ifExists) =>
+      val v1TableName = parseV1Table(tableName, "UNCACHE TABLE")
+      UncacheTableCommand(v1TableName.asTableIdentifier, ifExists)
+
     case TruncateTableStatement(tableName, partitionSpec) =>
       val v1TableName = parseV1Table(tableName, "TRUNCATE TABLE")
       TruncateTableCommand(

sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala

@@ -165,13 +165,6 @@ class SparkSqlAstBuilder(conf: SQLConf) extends AstBuilder(conf) {
     unquotedPath
   }
 
-  /**
-   * Create an [[UncacheTableCommand]] logical plan.
-   */
-  override def visitUncacheTable(ctx: UncacheTableContext): LogicalPlan = withOrigin(ctx) {
-    UncacheTableCommand(visitTableIdentifier(ctx.tableIdentifier), ctx.EXISTS != null)
-  }
-
   /**
    * Create a [[ClearCacheCommand]] logical plan.
    */

sql/core/src/test/scala/org/apache/spark/sql/connector/DataSourceV2SQLSuite.scala

@@ -1282,6 +1282,16 @@ class DataSourceV2SQLSuite
     }
   }
 
+  test("UNCACHE TABLE") {
+    val t = "testcat.ns1.ns2.tbl"
+    withTable(t) {
+      sql(s"CREATE TABLE $t (id bigint, data string) USING foo")
+
+      testV1Command("UNCACHE TABLE", t)
+      testV1Command("UNCACHE TABLE", s"IF EXISTS $t")
+    }
+  }
+
   private def testV1Command(sqlCommand: String, sqlParams: String): Unit = {
     val e = intercept[AnalysisException] {
       sql(s"$sqlCommand $sqlParams")