Static and Dynamic ESQL
You can write your application using static ESQL, dynamic ESQL, or a combination of both. Static ESQL provides a basic syntax for specifying Progress/SQL statements directly in your C Language code. You can use static ESQL when you know the exact contents of your SQL statements at compile time.
Dynamic ESQL includes additional statements and C data structures for feeding run-time SQL statements to Progress and returning results to your application. Use dynamic ESQL when your application cannot determine the contents of its SQL statements until run time.
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