newOp: func() executeLogicOfOverload {
-    return Strcmp
+    return func(ivecs []*vector.Vector, result vector.FunctionResultWrapper, proc *process.Process, length int) error {
+        err := Strcmp(ivecs, result, proc, length)
+        if err != nil {
+            return fmt.Errorf("error in Strcmp: %w", err)
+        }
+        return nil
+    }
 },
 

 func strcmp(s1, s2 string) int8 {
-    return (int8)(strings.Compare(s1, s2))
+    if s1 == s2 {
+        return 0
+    }
+    if s1 < s2 {
+        return -1
+    }
+    return 1
 }
 

-// function `strcmp`
+// function `strcmp` compares two strings lexicographically
+// It returns:
+//   -1 if s1 < s2
+//    0 if s1 == s2
+//    1 if s1 > s2
+// This function is case-sensitive and uses byte-by-byte comparison.
 {
     functionId: STRCMP,
     class:      plan.Function_STRICT,
     layout:     STANDARD_FUNCTION,
     checkFn:    fixedTypeMatch,