Compiling an SQR program can improve its performance. The compiled program is stored in a runtime (.SQT)file. You can then run it with SQR Execute. SQCs are like functional library files which we can include in our SQR programs.
.SQC is a Fuction Library file. It is lke a sub program is saved by extension .SQC and this program can be called in the SQR program
.SQT is compile time/Run time file. When a file with XXX.SQR is compiled we get the output as XXX.SQT and when is XXX.SQT is runed or executed we get the output XXX.LIS (List file/Output file).