Update queries (#5143)

* Update index.md

added correct syntax for renaming table or column

* Update src/data/roadmaps/sql/content/102-ddl/index.md

* Update src/data/roadmaps/sql/content/102-ddl/index.md

* Update src/data/roadmaps/sql/content/102-ddl/index.md

* Update src/data/roadmaps/sql/content/102-ddl/index.md

* Update src/data/roadmaps/sql/content/102-ddl/index.md

---------

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/sql/content/102-ddl/index.md

@@ -35,9 +35,15 @@ Data Definition Language (DDL) is a subset of SQL. Its primary function is to cr
 5. `RENAME`: This is used to rename an object in the database.
 
     ```sql
-    RENAME TABLE old_table_name TO new_table_name;
+    -- To rename a table
+    ALTER TABLE table_name
+    RENAME TO new_table_name;
+    
+    -- To rename a column
+    ALTER TABLE table_name
+    RENAME COLUMN old_column_name TO new_column_name;
     ```
 
 Remember: In DDL operations, `COMMIT` and `ROLLBACK` statement cannot be performed because the MySQL engine automatically commits the changes.
 
-Remember to replace `table_name`, `column_name`, `datatype(size)`, `old_table_name`, and `new_table_name` in the examples above with your actual table names, column names, data types and sizes, and the old or new table names you want to specify.
+Remember to replace `table_name`, `column_name`, `datatype(size)`, `old_table_name`, and `new_table_name` in the examples above with your actual table names, column names, data types and sizes, and the old or new table names you want to specify.