Input Descriptors

From InterBase

Go Up to Understanding the XSQLDA

Input descriptors are used to process SQL statement strings that contain parameters. Before an application can execute a statement with parameters, it must supply values for them. The application indicates the number of parameters passed in the XSQLDA sqld field, then describes each parameter in a separate XSQLVAR structure. For example, the following statement string contains two parameters, so an application must set sqld to 2, and describe each parameter:


When the statement is executed, the first XSQLVAR supplies information about the BUDGET value, and the second XSQLVAR supplies the LOCATION value.

For more information about using input descriptors, see DSQL Programming Methods.

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