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ABL Data Types Addenda
Large object data types : Character large objects
 

Character large objects

A character large object (CLOB) is distinguished from a BLOB in that it contains only character data, has a code page associated with it, and when working with CLOB values offsets are always in terms of characters (since some characters might be multi-byte).
Similar to a BLOB field, a CLOB field is a database table or temp-table field that contains a CLOB locator, which points to the associated CLOB data stored in the database. You cannot manipulate CLOB data directly. Instead, you must copy a CLOB to a LONGCHAR to manipulate the character contents of a CLOB field in ABL. You display a CLOB field by copying it to a LONGCHAR, and displaying the LONGCHAR in a large editor. See Copyinglarge objects for more information.
* What you can do with CLOB values
* Restrictions
* CLOB code pages