Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/18421#discussion_r126273031
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -93,30 +93,50 @@ class SparkSqlAstBuilder extends AstBuilder {
}
/**
- * Create an [[AnalyzeTableCommand]] command or an
[[AnalyzeColumnCommand]] command.
- * Example SQL for analyzing table :
+ * Create an [[AnalyzeTableCommand]] command, or an
[[AnalyzePartitionCommand]]
+ * or an [[AnalyzeColumnCommand]] command.
+ * Example SQL for analyzing table or a set of partitions :
* {{{
- * ANALYZE TABLE table COMPUTE STATISTICS [NOSCAN];
+ * ANALYZE TABLE [db_name.]tablename [PARTITION (partcol1[=val1],
partcol2[=val2], ...)]
+ * COMPUTE STATISTICS [NOSCAN];
* }}}
+ *
* Example SQL for analyzing columns :
* {{{
- * ANALYZE TABLE table COMPUTE STATISTICS FOR COLUMNS column1, column2;
+ * ANALYZE TABLE [db_name.]tablename COMPUTE STATISTICS FOR COLUMNS
column1, column2;
* }}}
*/
override def visitAnalyze(ctx: AnalyzeContext): LogicalPlan =
withOrigin(ctx) {
- if (ctx.partitionSpec != null) {
- logWarning(s"Partition specification is ignored:
${ctx.partitionSpec.getText}")
+ if (ctx.identifier != null &&
+ ctx.identifier.getText.toLowerCase(Locale.ROOT) != "noscan") {
+ throw new ParseException(s"Expected `NOSCAN` instead of
`${ctx.identifier.getText}`", ctx)
}
- if (ctx.identifier != null) {
- if (ctx.identifier.getText.toLowerCase(Locale.ROOT) != "noscan") {
- throw new ParseException(s"Expected `NOSCAN` instead of
`${ctx.identifier.getText}`", ctx)
+
+ val partitionSpec =
+ if (ctx.partitionSpec != null) {
+ val filteredSpec =
visitPartitionSpec(ctx.partitionSpec).filter(_._2.isDefined)
+ if (filteredSpec.isEmpty) {
+ None
+ } else {
+ Some(filteredSpec.mapValues(_.get))
+ }
+ } else {
+ None
+ }
+
+ val table = visitTableIdentifier(ctx.tableIdentifier)
+ if (ctx.identifierSeq() == null) {
+ if (partitionSpec.isDefined) {
+ AnalyzePartitionCommand(table, partitionSpec.get, noscan =
ctx.identifier != null)
+ } else {
+ AnalyzeTableCommand(table, noscan = ctx.identifier != null)
}
- AnalyzeTableCommand(visitTableIdentifier(ctx.tableIdentifier))
- } else if (ctx.identifierSeq() == null) {
- AnalyzeTableCommand(visitTableIdentifier(ctx.tableIdentifier),
noscan = false)
} else {
+ if (partitionSpec.isDefined) {
+ logWarning(s"Partition specification is ignored:
${ctx.partitionSpec.getText}")
--- End diff --
Partition specification is ignored when collecting column statistics
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