Output Descriptors
From InterBase
Go Up to Understanding the XSQLDA
Output descriptors return values from an executed query to an application. The sqld
field of the XSQLDA
indicates how many values were returned. Each value is stored in a separate XSQLVAR
structure. The XSQLDA
sqlvar
field points to the first of these XSQLVAR
structures. The following statement string requires an output descriptor:
char *str = "SELECT * FROM CUSTOMER WHERE CUST_NO > 100";
For information about retrieving information from an output descriptor, see DSQL Programming Methods.