Hallo Stefan,
wir machen das so:

Eval Var1 = '%'+%trim(Suchbegriff)+ '%'

C/EXEC SQL
C+ Declare C1 Cursor
C+ for select field1, field2
C+ from datei1
C+ where field1 like :Var1
C+ For Read Only
C/END-EXEC

Gruss
Frank