From 89b663a262e885aa068eae3b7bc21655885d1e90 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9B=BE=E9=A1=BA?= <15272782842@163.com>
Date: Fri, 6 Sep 2024 22:29:45 +0800
Subject: [PATCH] add postgres StringAgg func

---
 field/expr.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/field/expr.go b/field/expr.go
index 17175a49..5799f566 100644
--- a/field/expr.go
+++ b/field/expr.go
@@ -207,6 +207,10 @@ func (e expr) GroupConcat() Expr {
 	return e.setE(clause.Expr{SQL: "GROUP_CONCAT(?)", Vars: []interface{}{e.RawExpr()}})
 }
 
+func (e expr) StringAgg() Expr {
+	return e.setE(clause.Expr{SQL: "STRING_AGG(?, ',')", Vars: []interface{}{e.RawExpr()}})
+}
+
 // ======================== comparison between columns ========================
 func (e expr) EqCol(col Expr) Expr {
 	return e.setE(clause.Expr{SQL: "? = ?", Vars: []interface{}{e.RawExpr(), col.RawExpr()}})