[PlSql] Support modifying an Oracle column's visibility with alter ta…

…ble (antlr#3620)
wangxuesong · Jul 21, 2023 · 351ba9c · 351ba9c
1 parent a3210bb
commit 351ba9c
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diff --git a/sql/plsql/PlSqlParser.g4 b/sql/plsql/PlSqlParser.g4
@@ -4910,7 +4910,9 @@ drop_column_clause
 
 modify_column_clauses
     : MODIFY ('(' modify_col_properties (',' modify_col_properties)* ')'
+             |'(' modify_col_visibility (',' modify_col_visibility)* ')'
              | modify_col_properties
+             | modify_col_visibility
              | modify_col_substitutable
              )
     ;
@@ -4919,6 +4921,10 @@ modify_col_properties
     : column_name datatype? (DEFAULT expression)? (ENCRYPT encryption_spec | DECRYPT)? inline_constraint* lob_storage_clause? //TODO alter_xmlschema_clause
     ;
 
+modify_col_visibility
+    : column_name (VISIBLE | INVISIBLE)
+    ;
+
 modify_col_substitutable
     : COLUMN column_name NOT? SUBSTITUTABLE AT ALL LEVELS FORCE?
     ;

diff --git a/sql/plsql/examples/alter_table.sql b/sql/plsql/examples/alter_table.sql
@@ -181,3 +181,8 @@ ALTER TABLE employees NO MEMOPTIMIZE FOR WRITE
     ENABLE VALIDATE CONSTRAINT emp_manager_fk
     EXCEPTIONS INTO exceptions;
 
+ALTER TABLE employees
+    MODIFY LAST_UPDATE_DATE invisible;
+
+ALTER TABLE employees
+    MODIFY LAST_UPDATE_DATE visible;