undo, strings.ToLower

pgm.go

@@ -44,6 +44,21 @@ func (f Field) Count() Field {
 	return Field("COUNT(" + f.String() + ")")
 }
 
+// StringEscape will return a empty string for null value
+func (f Field) StringEscape() Field {
+	return Field("COALESCE(" + f.String() + ", '')")
+}
+
+// NumberEscape will return a zero string for null value
+func (f Field) NumberEscape() Field {
+	return Field("COALESCE(" + f.String() + ", 0)")
+}
+
+// BooleanEscape will return a false for null value
+func (f Field) BooleanEscape() Field {
+	return Field("COALESCE(" + f.String() + ", FALSE)")
+}
+
 // Avg fn wrapping of field
 func (f Field) Avg() Field {
 	return Field("AVG(" + f.String() + ")")
@@ -89,10 +104,10 @@ func (f Field) Eq(val any) Conditioner {
 	return &Cond{Field: col, Val: val, op: " = $", len: len(col) + 5}
 }
 
-// EqualFold will user LOWER() for comparision
-func (f Field) EqFold(val any) Conditioner {
+// EqualFold will use LOWER(column_name) = LOWER(val) for comparision
+func (f Field) EqFold(val string) Conditioner {
 	col := f.String()
-	return &Cond{Field: "LOWER(" + col + ")", Val: val, op: " = LOWER($", action: CondActionNeedToClose, len: len(col) + 5}
+	return &Cond{Field: "LOWER(" + col + ")", Val: strings.ToLower(val), op: " = LOWER($", action: CondActionNeedToClose, len: len(col) + 5}
 }
 
 func (f Field) NEq(val any) Conditioner {