5. Working with Embedded SQL : Data Handlers for Large Objects : Restrictions on Data Handlers
 
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Restrictions on Data Handlers
Data handlers are subject to the following restrictions:
The DATAHANDLER clause is not valid in interactive SQL.
The DATAHANDLER clause cannot be specified in a dynamic SQL statement.
The DATAHANDLER clause cannot be specified in an execute procedure statement.
The DATAHANDLER clause cannot be specified in a declare section.
A data handler routine must not issue a database query. The following statements are valid in data handlers:
PUT DATA and GET DATA
ENDDATA (for read data handlers only)
INQUIRE_SQL and SET_SQL
Host language statements