[fix] 处理查询结果字段类型为 slice,struct时报错

scan_test.go

@@ -4,11 +4,11 @@ import (
 	"testing"
 )
 
-var oDB *DB
+var myConn *Connection
 
 func init() {
-	oDB = Open(map[string]DBConfig{
-		"default": {
+	database := Open(map[string]DBConfig{
+		"mysql": {
 			Driver:          "mysql",
 			Host:            "localhost",
 			Port:            "3366",
@@ -20,12 +20,14 @@ func init() {
 			// ParseTime:       true,
 		},
 	})
+
+	myConn = database.Connection("mysql")
 }
 
 func TestScanMapSlice(t *testing.T) {
 	dest := []map[string]any{}
 
-	oDB.Select("select * from fsm", []any{}, &dest)
+	myConn.Select("select * from fsm", []any{}, &dest)
 
 	t.Log(dest)
 }
@@ -34,7 +36,7 @@ func TestScanValues(t *testing.T) {
 
 	dest := []int{}
 
-	oDB.Select("select id from fsm", []any{}, &dest)
+	myConn.Select("select 1 as id", []any{}, &dest)
 
 	t.Log(dest)
 }
@@ -43,19 +45,31 @@ func TestScanMap(t *testing.T) {
 
 	dest := map[string]any{}
 
-	oDB.Select("select * from fsm where id = 3", []any{}, &dest)
+	myConn.Select("select 0 as id, 'test' as code", []any{}, &dest)
 
 	t.Log(dest)
 }
 
 func TestScanStruct(t *testing.T) {
-
 	dest := struct {
 		Id   int    `db:"id"`
 		Code string `db:"code"`
 	}{}
 
-	oDB.Select("select * from fsm", []any{}, &dest)
+	myConn.Select(`select 0 as id, 'test' as code`, []any{}, &dest)
+
+	t.Log(dest)
+}
+
+func TestScanJsonFieldStruct(t *testing.T) {
+
+	dest := struct {
+		Id   int            `db:"id"`
+		Code string         `db:"code"`
+		Map  map[string]any `db:"map"`
+	}{}
+
+	myConn.Select(`select 0 as id, 'test' as code, '{"a":1}' as map`, []any{}, &dest)
 
 	t.Log(dest)
 }
@@ -67,7 +81,20 @@ func TestScanStructSlice(t *testing.T) {
 		Code string `db:"code"`
 	}{}
 
-	oDB.Select("select * from fsm", []any{}, &dest)
+	myConn.Select("select * from ((select 0 as id, 'test' as code) union (select 1 as id, 'test1' as code)) as t", []any{}, &dest)
+
+	t.Log(dest)
+}
+
+func TestScanJsonFieldStructSlice(t *testing.T) {
+
+	dest := []struct {
+		Id   int            `db:"id"`
+		Code string         `db:"code"`
+		Map  map[string]any `db:"map"`
+	}{}
+
+	myConn.Select(`select * from ((select 0 as id, 'test' as code, '{"a":1}' as map) union (select 1 as id, 'test1' as code, '{"a":2}' as map)) as t`, []any{}, &dest)
 
 	t.Log(dest)
 }