feat: Oracle 驱动完整化——回调体系、版本感知、驱动抽象层与测试套件

- 新增驱动抽象层 driver_adapter（go-ora/godror 双驱动切换）
- 新增 Update/Delete/Query 回调，完善 RETURNING INTO 子句
- 修复 create.go 事务悬挂行 BUG、批量 RowsAffected、主键 WHERE 注入
- 版本感知体系：分页/自增/序列默认值/BOOLEAN/32k VARCHAR2 分级能力判定
- 11g 序列+触发器自增、ON UPDATE 触发器、默认值智能转换
- 升级 go-ora v2.8.19 → v2.9.0
- 单元测试+模块测试+集成测试共 96 个，真实 Oracle 11g 全绿
- 测试 DSN 密码移除，改为 ORACLE_DSN 环境变量注入

tests/query_test.go

@@ -0,0 +1,84 @@
+package tests
+
+import (
+	"testing"
+)
+
+func TestQuerySingle(t *testing.T) {
+	// 先确保表存在并清空
+	if err := DB.AutoMigrate(&User{}); err != nil {
+		t.Fatalf("failed to migrate: %v", err)
+	}
+	clearTable(t, "TEST_USERS")
+
+	// 创建测试数据
+	user := User{Name: "Query Test", Email: "query@example.com", Age: 35}
+	DB.Create(&user)
+
+	// 查询
+	var found User
+	result := DB.First(&found, user.ID)
+	if result.Error != nil {
+		t.Fatalf("failed to query: %v", result.Error)
+	}
+
+	if found.Name != "Query Test" {
+		t.Errorf("expected name 'Query Test', got '%s'", found.Name)
+	}
+}
+
+func TestQueryWithConditions(t *testing.T) {
+	// 先确保表存在并清空
+	if err := DB.AutoMigrate(&User{}); err != nil {
+		t.Fatalf("failed to migrate: %v", err)
+	}
+	clearTable(t, "TEST_USERS")
+
+	// 创建测试数据
+	users := []User{
+		{Name: "Condition 1", Email: "cond1@example.com", Age: 20, Active: true},
+		{Name: "Condition 2", Email: "cond2@example.com", Age: 25, Active: true},
+		{Name: "Condition 3", Email: "cond3@example.com", Age: 30, Active: false},
+	}
+	DB.Create(&users)
+
+	// 条件查询
+	var results []User
+	result := DB.Where("active = ? AND age > ?", true, 22).Find(&results)
+	if result.Error != nil {
+		t.Fatalf("failed to query: %v", result.Error)
+	}
+
+	if len(results) != 1 {
+		t.Errorf("expected 1 result, got %d", len(results))
+	}
+}
+
+func TestQueryWithLimit(t *testing.T) {
+	// 先确保表存在并清空
+	if err := DB.AutoMigrate(&User{}); err != nil {
+		t.Fatalf("failed to migrate: %v", err)
+	}
+	clearTable(t, "TEST_USERS")
+
+	// 创建测试数据
+	for i := 0; i < 10; i++ {
+		user := User{
+			Name:  "Limit Test",
+			Email: "limit" + string(rune('a'+i)) + "@example.com",
+			Age:   i,
+		}
+		DB.Create(&user)
+	}
+
+	// 分页查询
+	var results []User
+	result := DB.Limit(5).Offset(2).Find(&results)
+	if result.Error != nil {
+		t.Fatalf("failed to query: %v", result.Error)
+	}
+
+	if len(results) != 5 {
+		t.Errorf("expected 5 results, got %d", len(results))
+	}
+}