Adding column in cloud database

Appian cloud is Maria DB.

The syntax to add a column in a table in MariaDB (using the ALTER TABLE statement) is: ALTER TABLE table_name ADD new_column_name column_definition [ FIRST | AFTER column_name ]; table_name The name of the table to modify. new_column_name The name of the new column to add to the table 

Using alter statement. What problem are you facing?