In the esqlc, the long data select operation is done using the c-treeESQL programmatic interface tpe_sqlgetdata() and the insert operation is done using the interface tpe_sqlputdata(). These C interfaces require the field handle as their argument. Two new field handle types have been introduced for this purpose. They are:
The above field handles type host variable need to be used in the EXEC SQL statement to get the field handle of the long column.