Informix Error -661

-661 Number of variables does not match number of values returned.

The number of variables on the left side of a LET statement does not match the number of values on the right side.

Example of error:

LET a,b = 10,20,39; LET i,j = proc1()+proc2(); LET a,b = (SELECT c1 FROM tab)

Correction: Match the number of expressions on both sides of the LET statement.