anchor.diff:  --- SQL operation failed with errors.
   ```
   
  +* This example alters the name of the column:
  ++
  +```
  +Alter TABLE PRODUCT 
  +ALTER COLUMN vend_id RENAME TO cstm_id;
  +```
   
   <<<
   [[alter_user_statement]]
  
positive.code: To run this statement, AUTOCOMMIT must be turned ON (the default) for the session.
  
  ```
  ALTER TABLE name alter-action
  
  alter-action is:
       ADD [IF NOT EXISTS][COLUMN] column-definition
  
negative.code: [[alter_table_examples]]
  ===  Example of ALTER TABLE
  
  * This example adds a column:
  + 
  ```
  ALTER TABLE persnl.project
     ADD COLUMN projlead
        NUMERIC (4) UNSIGNED
  ```
  
  * This example alters a column of an existing table – showing both positive and negative cases:
  +
  ```
  >>INVOKE T;
  
  