One of the most convenient features of SAP SQL statements is the IN operator. Using IN, the programmer can dynamically...
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build a WHERE clause with a great deal of flexibility. It is important to understand what happens when you use IN to avoid database errors.
After a SELECT statement is executed, all records in the range table are added to the WHERE clause. This works well when the range table is small (less than 1,000 records) but as the size of the range table increases, the length of the WHERE clause increases until the length exceeds the maximum size that can be passed to the database. You can identify this error when the ABAP program terminates with a short dump that contains the error BIF_RSQL_INVALID_REQUEST.