From a9753f5948fa2f575709d5c7a20662aabe2c3730 Mon Sep 17 00:00:00 2001
From: The-night-elves <p61863040@gmail.com>
Date: Sat, 15 Nov 2025 12:46:58 +0800
Subject: [PATCH] feat(contrib/drivers/pgsql): add array type numeric[] and
 decimal[] converting to Go []float64 support #4457

---
 contrib/drivers/pgsql/pgsql_convert.go        |  9 +++
 .../drivers/pgsql/pgsql_z_unit_init_test.go   |  2 +
 .../drivers/pgsql/pgsql_z_unit_model_test.go  | 65 +++++++++++++++++++
 database/gdb/gdb.go                           | 45 ++++++-------
 4 files changed, 99 insertions(+), 22 deletions(-)

diff --git a/contrib/drivers/pgsql/pgsql_convert.go b/contrib/drivers/pgsql/pgsql_convert.go
index 00e1e92fa40..f308d95df26 100644
--- a/contrib/drivers/pgsql/pgsql_convert.go
+++ b/contrib/drivers/pgsql/pgsql_convert.go
@@ -77,6 +77,8 @@ func (d *Driver) CheckLocalTypeForField(ctx context.Context, fieldType string, f
 	case
 		"_varchar", "_text":
 		return gdb.LocalTypeStringSlice, nil
+	case "_numeric", "_decimal":
+		return gdb.LocalTypeFloat64Slice, nil
 
 	default:
 		return d.Core.CheckLocalTypeForField(ctx, fieldType, fieldValue)
@@ -130,6 +132,13 @@ func (d *Driver) ConvertValueForLocal(ctx context.Context, fieldType string, fie
 		}
 		return []string(result), nil
 
+	// Float64 slice.
+	case "_numeric", "_decimal":
+		var result pq.Float64Array
+		if err := result.Scan(fieldValue); err != nil {
+			return nil, err
+		}
+		return []float64(result), nil
 	default:
 		return d.Core.ConvertValueForLocal(ctx, fieldType, fieldValue)
 	}
diff --git a/contrib/drivers/pgsql/pgsql_z_unit_init_test.go b/contrib/drivers/pgsql/pgsql_z_unit_init_test.go
index 1c71042c272..f1a0034f377 100644
--- a/contrib/drivers/pgsql/pgsql_z_unit_init_test.go
+++ b/contrib/drivers/pgsql/pgsql_z_unit_init_test.go
@@ -85,6 +85,8 @@ func createTableWithDb(db gdb.DB, table ...string) (name string) {
 		   	create_time timestamp NOT NULL,
 		    favorite_movie varchar[],
 		    favorite_music text[],
+			numeric_values numeric[],
+			decimal_values decimal[],
 		   	PRIMARY KEY (id)
 		) ;`, name,
 	)); err != nil {
diff --git a/contrib/drivers/pgsql/pgsql_z_unit_model_test.go b/contrib/drivers/pgsql/pgsql_z_unit_model_test.go
index 3a51ba264dc..56db22a85b1 100644
--- a/contrib/drivers/pgsql/pgsql_z_unit_model_test.go
+++ b/contrib/drivers/pgsql/pgsql_z_unit_model_test.go
@@ -692,3 +692,68 @@ func Test_ConvertSliceString(t *testing.T) {
 		t.Assert(len(user2.FavoriteMovie), 0)
 	})
 }
+
+func Test_ConvertSliceFloat64(t *testing.T) {
+	table := createTable()
+	defer dropTable(table)
+
+	type Args struct {
+		NumericValues []float64 `orm:"numeric_values"`
+		DecimalValues []float64 `orm:"decimal_values"`
+	}
+	type User struct {
+		Id         int         `orm:"id"`
+		Passport   string      `orm:"passport"`
+		Password   string      `json:"password"`
+		NickName   string      `json:"nickname"`
+		CreateTime *gtime.Time `json:"create_time"`
+		Args
+	}
+
+	tests := []struct {
+		name string
+		args Args
+	}{
+		{
+			name: "nil",
+			args: Args{
+				NumericValues: nil,
+				DecimalValues: nil,
+			},
+		},
+		{
+			name: "not nil",
+			args: Args{
+				NumericValues: []float64{1.1, 2.2, 3.3},
+				DecimalValues: []float64{1.1, 2.2, 3.3},
+			},
+		},
+		{
+			name: "not empty",
+			args: Args{
+				NumericValues: []float64{},
+				DecimalValues: []float64{},
+			},
+		},
+	}
+	now := gtime.New(CreateTime)
+	for i, tt := range tests {
+		gtest.C(t, func(t *gtest.T) {
+			user := User{
+				Id:         i + 1,
+				Passport:   "",
+				Password:   "",
+				NickName:   "",
+				CreateTime: now,
+				Args:       tt.args,
+			}
+
+			_, err := db.Model(table).OmitNilData().Insert(user)
+			t.AssertNil(err)
+			var got Args
+			err = db.Model(table).Where("id", user.Id).Limit(1).Scan(&got)
+			t.AssertNil(err)
+			t.AssertEQ(tt.args, got)
+		})
+	}
+}
diff --git a/database/gdb/gdb.go b/database/gdb/gdb.go
index d5925efd2c8..f4260b0525c 100644
--- a/database/gdb/gdb.go
+++ b/database/gdb/gdb.go
@@ -787,28 +787,29 @@ const (
 type LocalType string
 
 const (
-	LocalTypeUndefined   LocalType = ""
-	LocalTypeString      LocalType = "string"
-	LocalTypeTime        LocalType = "time"
-	LocalTypeDate        LocalType = "date"
-	LocalTypeDatetime    LocalType = "datetime"
-	LocalTypeInt         LocalType = "int"
-	LocalTypeUint        LocalType = "uint"
-	LocalTypeInt64       LocalType = "int64"
-	LocalTypeUint64      LocalType = "uint64"
-	LocalTypeBigInt      LocalType = "bigint"
-	LocalTypeIntSlice    LocalType = "[]int"
-	LocalTypeInt64Slice  LocalType = "[]int64"
-	LocalTypeUint64Slice LocalType = "[]uint64"
-	LocalTypeStringSlice LocalType = "[]string"
-	LocalTypeInt64Bytes  LocalType = "int64-bytes"
-	LocalTypeUint64Bytes LocalType = "uint64-bytes"
-	LocalTypeFloat32     LocalType = "float32"
-	LocalTypeFloat64     LocalType = "float64"
-	LocalTypeBytes       LocalType = "[]byte"
-	LocalTypeBool        LocalType = "bool"
-	LocalTypeJson        LocalType = "json"
-	LocalTypeJsonb       LocalType = "jsonb"
+	LocalTypeUndefined    LocalType = ""
+	LocalTypeString       LocalType = "string"
+	LocalTypeTime         LocalType = "time"
+	LocalTypeDate         LocalType = "date"
+	LocalTypeDatetime     LocalType = "datetime"
+	LocalTypeInt          LocalType = "int"
+	LocalTypeUint         LocalType = "uint"
+	LocalTypeInt64        LocalType = "int64"
+	LocalTypeUint64       LocalType = "uint64"
+	LocalTypeBigInt       LocalType = "bigint"
+	LocalTypeIntSlice     LocalType = "[]int"
+	LocalTypeInt64Slice   LocalType = "[]int64"
+	LocalTypeUint64Slice  LocalType = "[]uint64"
+	LocalTypeStringSlice  LocalType = "[]string"
+	LocalTypeFloat64Slice LocalType = "[]float64"
+	LocalTypeInt64Bytes   LocalType = "int64-bytes"
+	LocalTypeUint64Bytes  LocalType = "uint64-bytes"
+	LocalTypeFloat32      LocalType = "float32"
+	LocalTypeFloat64      LocalType = "float64"
+	LocalTypeBytes        LocalType = "[]byte"
+	LocalTypeBool         LocalType = "bool"
+	LocalTypeJson         LocalType = "json"
+	LocalTypeJsonb        LocalType = "jsonb"
 )
 
 const (