Click here to view and discuss this page in DocCommentXchange. In the future, you will be sent there automatically.

SQL Anywhere 12.0.0 » SQL Anywhere Server - Programming » Embedded SQL

 

Using host variables

Host variables are C variables that are identified to the SQL preprocessor. Host variables can be used to send values to the database server or receive values from the database server.

Host variables are quite easy to use, but they have some restrictions. Dynamic SQL is a more general way of passing information to and from the database server using a structure known as the SQL Descriptor Area (SQLDA). The SQL preprocessor automatically generates a SQLDA for each statement in which host variables are used.

Host variables cannot be used in batches. Host variables cannot be used within a subquery in a SET statement.

For information about dynamic SQL, see Static and dynamic SQL.


Declaring host variables
C host variable types
Host variable usage
Indicator variables