From 9235aea183be15d9712594aa3879b340ef966b27 Mon Sep 17 00:00:00 2001
From: Daniel Hammerschmid <daniel.hammerschmid@documatrix.com>
Date: Mon, 25 Jul 2022 16:50:45 +0200
Subject: [PATCH] Added functions SelectExprs, MaxExpr, MinExp

---
 expression_ext.go | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/expression_ext.go b/expression_ext.go
index 1763f3a8..b6f6992e 100644
--- a/expression_ext.go
+++ b/expression_ext.go
@@ -271,9 +271,9 @@ func (e *expr) SumExpr() *expr {
 	return e
 }
 
-func (e *expr) ReplaceExpr(search string,replace string) *expr {
+func (e *expr) ReplaceExpr(search string, replace string) *expr {
 	e.expr = "REPLACE(" + e.expr + ",?,?)"
-	e.args = append(e.args, search, replace)	
+	e.args = append(e.args, search, replace)
 	return e
 }
 
@@ -434,10 +434,20 @@ func (e *expr) Max() string {
 	return "MAX(" + e.expr + ")"
 }
 
+func (e *expr) MaxExpr() *expr {
+	e.expr = "MAX(" + e.expr + ")"
+	return e
+}
+
 func (e *expr) Min() string {
 	return "MIN(" + e.expr + ")"
 }
 
+func (e *expr) MinExpr() *expr {
+	e.expr = "MIN(" + e.expr + ")"
+	return e
+}
+
 func (e *expr) LowerExpr() *expr {
 	e.expr = "LOWER(" + e.expr + ")"
 	return e
@@ -583,6 +593,18 @@ func (db *DB) SelectFields(fields ...string) *DB {
 	return db.clone().Select(selects)
 }
 
+func (db *DB) SelectExprs(fields ...interface{}) *DB {
+	e := &expr{}
+	for i, field := range fields {
+		if i != 0 {
+			e.expr += ", "
+		}
+		addStatementToExpression(e, field)
+	}
+
+	return db.clone().Select(e.expr, e.args...)
+}
+
 func (e *expr) Intersect(e2 *expr) *expr {
 	e.expr = "((" + e.expr + ") INTERSECT (" + e2.expr + "))"
 	e.args = append(e.args, e2.args...)