forked from apache/spark
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[SPARK-33898][SQL] Support SHOW CREATE TABLE In V2
### What changes were proposed in this pull request? 1. Implement V2 execution node `ShowCreateTableExec` similar to V1 `ShowCreateTableCommand` 2. No support `SHOW CREATE TABLE XXX AS SERDE` ### Why are the changes needed? [SPARK-33898](https://issues.apache.org/jira/browse/SPARK-33898) ### Does this PR introduce _any_ user-facing change? Yes. Support the user to execute `SHOW CREATE TABLE` command in V2 table ### How was this patch tested? Add two UT tests 1. ./dev/scalastyle 2. run test DataSourceV2SQLSuite Closes apache#32931 from Peng-Lei/SPARK-33898. Lead-authored-by: PengLei <[email protected]> Co-authored-by: PengLei <[email protected]> Signed-off-by: Kent Yao <[email protected]>
- Loading branch information
Showing
4 changed files
with
230 additions
and
7 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
127 changes: 127 additions & 0 deletions
127
...re/src/main/scala/org/apache/spark/sql/execution/datasources/v2/ShowCreateTableExec.scala
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF licenses this file to You under the Apache License, Version 2.0 | ||
| * (the "License"); you may not use this file except in compliance with | ||
| * the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package org.apache.spark.sql.execution.datasources.v2 | ||
|
|
||
| import scala.collection.JavaConverters._ | ||
| import scala.collection.mutable.ArrayBuffer | ||
|
|
||
| import org.apache.spark.sql.catalyst.InternalRow | ||
| import org.apache.spark.sql.catalyst.expressions.Attribute | ||
| import org.apache.spark.sql.catalyst.util.escapeSingleQuotedString | ||
| import org.apache.spark.sql.connector.catalog.{CatalogV2Util, Table, TableCatalog} | ||
| import org.apache.spark.sql.execution.LeafExecNode | ||
| import org.apache.spark.unsafe.types.UTF8String | ||
|
|
||
| /** | ||
| * Physical plan node for show create table. | ||
| */ | ||
| case class ShowCreateTableExec( | ||
| output: Seq[Attribute], | ||
| table: Table) extends V2CommandExec with LeafExecNode { | ||
| override protected def run(): Seq[InternalRow] = { | ||
| val builder = StringBuilder.newBuilder | ||
| showCreateTable(table, builder) | ||
| Seq(InternalRow(UTF8String.fromString(builder.toString))) | ||
| } | ||
|
|
||
| private def showCreateTable(table: Table, builder: StringBuilder): Unit = { | ||
| builder ++= s"CREATE TABLE ${table.name()} " | ||
|
|
||
| showTableDataColumns(table, builder) | ||
| showTableUsing(table, builder) | ||
|
|
||
| val tableOptions = table.properties.asScala | ||
| .filterKeys(_.startsWith(TableCatalog.OPTION_PREFIX)).map { | ||
| case (k, v) => k.drop(TableCatalog.OPTION_PREFIX.length) -> v | ||
| }.toMap | ||
| showTableOptions(builder, tableOptions) | ||
| showTablePartitioning(table, builder) | ||
| showTableComment(table, builder) | ||
| showTableLocation(table, builder) | ||
| showTableProperties(table, builder, tableOptions) | ||
| } | ||
|
|
||
| private def showTableDataColumns(table: Table, builder: StringBuilder): Unit = { | ||
| val columns = table.schema().fields.map(_.toDDL) | ||
| builder ++= concatByMultiLines(columns) | ||
| } | ||
|
|
||
| private def showTableUsing(table: Table, builder: StringBuilder): Unit = { | ||
| Option(table.properties.get(TableCatalog.PROP_PROVIDER)) | ||
| .map("USING " + escapeSingleQuotedString(_) + "\n") | ||
| .foreach(builder.append) | ||
| } | ||
|
|
||
| private def showTableOptions( | ||
| builder: StringBuilder, | ||
| tableOptions: Map[String, String]): Unit = { | ||
| if (tableOptions.nonEmpty) { | ||
| val props = tableOptions.map { case (key, value) => | ||
| s"'${escapeSingleQuotedString(key)}' = '${escapeSingleQuotedString(value)}'" | ||
| } | ||
| builder ++= "OPTIONS" | ||
| builder ++= concatByMultiLines(props) | ||
| } | ||
| } | ||
|
|
||
| private def showTablePartitioning(table: Table, builder: StringBuilder): Unit = { | ||
| if (!table.partitioning.isEmpty) { | ||
| val transforms = new ArrayBuffer[String] | ||
| table.partitioning.foreach(t => transforms += t.describe()) | ||
| builder ++= s"PARTITIONED BY ${transforms.mkString("(", ", ", ")")}\n" | ||
| } | ||
| } | ||
|
|
||
| private def showTableLocation(table: Table, builder: StringBuilder): Unit = { | ||
| Option(table.properties.get(TableCatalog.PROP_LOCATION)) | ||
| .map("LOCATION '" + escapeSingleQuotedString(_) + "'\n") | ||
| .foreach(builder.append) | ||
| } | ||
|
|
||
| private def showTableProperties( | ||
| table: Table, | ||
| builder: StringBuilder, | ||
| tableOptions: Map[String, String]): Unit = { | ||
|
|
||
|
|
||
| val showProps = table.properties.asScala | ||
| .filterKeys(key => !CatalogV2Util.TABLE_RESERVED_PROPERTIES.contains(key) | ||
| && !key.startsWith(TableCatalog.OPTION_PREFIX) | ||
| && !tableOptions.contains(key)) | ||
| if (showProps.nonEmpty) { | ||
| val props = showProps.map { | ||
| case (key, value) => | ||
| s"'${escapeSingleQuotedString(key)}' = '${escapeSingleQuotedString(value)}'" | ||
| } | ||
|
|
||
| builder ++= "TBLPROPERTIES" | ||
| builder ++= concatByMultiLines(props) | ||
| } | ||
| } | ||
|
|
||
| private def showTableComment(table: Table, builder: StringBuilder): Unit = { | ||
| Option(table.properties.get(TableCatalog.PROP_COMMENT)) | ||
| .map("COMMENT '" + escapeSingleQuotedString(_) + "'\n") | ||
| .foreach(builder.append) | ||
| } | ||
|
|
||
| private def concatByMultiLines(iter: Iterable[String]): String = { | ||
| iter.mkString("(\n ", ",\n ", ")\n") | ||
| } | ||
|
|
||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters