[Plsql] pivot_clause and unpivot_clause can have own alias (#4363)

antlr · Dec 22, 2024 · 7f917ad · 7f917ad
1 parent f54fe1c
commit 7f917ad
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Showing 3 changed files with 17 additions and 2 deletions.
diff --git a/sql/plsql/PlSqlParser.g4 b/sql/plsql/PlSqlParser.g4
@@ -5986,7 +5986,7 @@ flashback_query_clause
     ;
 
 pivot_clause
-    : PIVOT XML? '(' pivot_element (',' pivot_element)* pivot_for_clause pivot_in_clause ')'
+    : PIVOT XML? '(' pivot_element (',' pivot_element)* pivot_for_clause pivot_in_clause ')' table_alias?
     ;
 
 pivot_element
@@ -6011,7 +6011,7 @@ pivot_in_clause_elements
     ;
 
 unpivot_clause
-    : UNPIVOT ((INCLUDE | EXCLUDE) NULLS)? '(' (column_name | paren_column_list) pivot_for_clause unpivot_in_clause ')'
+    : UNPIVOT ((INCLUDE | EXCLUDE) NULLS)? '(' (column_name | paren_column_list) pivot_for_clause unpivot_in_clause ')' table_alias?
     ;
 
 unpivot_in_clause

diff --git a/sql/plsql/examples/pivot14.sql b/sql/plsql/examples/pivot14.sql
@@ -0,0 +1,9 @@
+SELECT s2.id, name, subject, score
+FROM scores2 s1
+    UNPIVOT (
+    score FOR subject IN (
+        chinese_score AS 'Chinese',
+        math_score AS 'Math',
+        english_score AS 'English'
+    )
+) s2;
diff --git a/sql/plsql/examples/pivot15.sql b/sql/plsql/examples/pivot15.sql
@@ -0,0 +1,6 @@
+SELECT *
+FROM (SELECT id, name, subject, score FROM scores) s1
+    PIVOT (
+    MAX(score)
+    FOR subject IN ('Chinese', 'Math', 'English')
+) s2;