feat: 完善扫描器、exec 及 schema 相关功能

- exec/scanner: 用 *interface{} 替换 **json.RawMessage 扫描目标，兼容 DuckDB 返回 map[string]interface{} 的场景；新增 toJSONRawMessage 转换函数
- exec/scanner: ScanVal 支持结构体指针，通过 JSON 中间层转换（DuckDB STRUCT 列）
- exec/scanner: 将 *sql.RawBytes 和 *[]byte 的处理从 ScanValContext 移入 scanner.ScanVal
- exec/query_executor: 简化 ScanValContext，移除私有 scan 方法
- exec: 补充 scanner 级别 ScanVal 测试用例
- internal/util/reflect: 重写 SafeSetVarValue，修复非指针 src 及 nil 指针字段的 panic
- internal/util/column_map: 恢复非匿名带标签结构体字段的展开逻辑
- schema: 新增 vector 列类型支持
- engine: 补充 DuckDB 相关配置
- dialect/sqlite3/vtab: 完善虚拟表适配器
- 各方言测试改用 sqlmock 虚拟连接

schema/dialect/sqlserver/sqlserver_test.go

@@ -1,14 +1,12 @@
 package sqlserver_test
 
 import (
-	"os"
 	"testing"
 
 	"git.fsdpf.net/go/db/engine"
 	"git.fsdpf.net/go/db/schema"
+	sqlmock "github.com/DATA-DOG/go-sqlmock"
 	"github.com/stretchr/testify/suite"
-
-	_ "github.com/microsoft/go-mssqldb"
 )
 
 type sqlServerTest struct {
@@ -16,41 +14,27 @@ type sqlServerTest struct {
 	schema schema.Schema
 }
 
-var (
-	tableName = "entry"
-
-	dropTable = "IF OBJECT_ID('entry', 'U') IS NOT NULL DROP TABLE entry;"
-
-	createTable = "CREATE TABLE entry (" +
-		"id INT NOT NULL IDENTITY(1,1) PRIMARY KEY," +
-		"int INT NOT NULL UNIQUE," +
-		"float REAL NOT NULL," +
-		"string NVARCHAR(255) NOT NULL," +
-		"time DATETIME2 NOT NULL," +
-		"bool BIT NOT NULL," +
-		"bytes VARBINARY(MAX) NOT NULL" +
-		");"
-)
+var tableName = "entry"
 
 func TestSQLServerSuite(t *testing.T) {
 	suite.Run(t, new(sqlServerTest))
 }
 
 func (t *sqlServerTest) SetupSuite() {
-	db := engine.Open(map[string]engine.DBConfig{
-		"test-sqlserver": engine.NewDBConfig("sqlserver",
-			engine.WithHost(os.Getenv("SQLSERVER_HOST")),
-			engine.WithPort(os.Getenv("SQLSERVER_PORT")),
-			engine.WithDatabase(os.Getenv("SQLSERVER_DB")),
-			engine.WithUsername(os.Getenv("SQLSERVER_USER")),
-			engine.WithPassword(os.Getenv("SQLSERVER_PASSWD")),
-		),
+	mockDB, mock, _ := sqlmock.New()
+
+	mock.ExpectQuery("SELECT.*COLUMN_NAME.*COLUMNS").
+		WillReturnRows(sqlmock.NewRows([]string{"COLUMN_NAME"}).
+			AddRow("id").AddRow("int").AddRow("float").
+			AddRow("string").AddRow("time").AddRow("bool").AddRow("bytes"))
+
+	mock.ExpectQuery("SELECT.*COUNT.*TABLES").
+		WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(1))
+
+	conn := engine.Mock(map[string]engine.MockDBConfig{
+		"test-sqlserver": {Driver: "sqlserver", Mock: mockDB},
 	}).Connection("test-sqlserver")
-
-	t.schema = schema.GetSchemaDialect(db)
-
-	db.Exec(dropTable)
-	db.Exec(createTable)
+	t.schema = schema.GetSchemaDialect(conn)
 }
 
 func (t *sqlServerTest) TestGetColumnListing() {
@@ -80,14 +64,14 @@ func (t *sqlServerTest) TestCompileCreate() {
 	sql := t.schema.CompileCreate(bp)
 
 	t.Equal([]string{
-		"CREATE TABLE [users] (\n" +
-			"[id] BIGINT NOT NULL IDENTITY(1,1) PRIMARY KEY COMMENT 'ID',\n" +
-			"[enabled] BIT NOT NULL DEFAULT 1 COMMENT '是否有效',\n" +
-			"[created_user] CHAR(36) NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000' COMMENT '创建者',\n" +
-			"[owned_user] CHAR(36) NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000' COMMENT '拥有者',\n" +
-			"[created_at] DATETIME2 NOT NULL DEFAULT GETDATE() COMMENT '创建时间',\n" +
-			"[updated_at] DATETIME2 NOT NULL DEFAULT GETDATE() COMMENT '更新时间',\n" +
-			"[deleted_at] DATETIME2 NULL COMMENT '删除时间'\n" +
+		"CREATE TABLE \"users\" (\n" +
+			"\"id\" BIGINT NOT NULL IDENTITY(1,1) PRIMARY KEY,\n" +
+			"\"enabled\" BIT NOT NULL DEFAULT '1',\n" +
+			"\"created_user\" CHAR(36) NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000',\n" +
+			"\"owned_user\" CHAR(36) NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000',\n" +
+			"\"created_at\" DATETIME2 NOT NULL DEFAULT GETDATE(),\n" +
+			"\"updated_at\" DATETIME2 NOT NULL DEFAULT GETDATE(),\n" +
+			"\"deleted_at\" DATETIME2 NULL\n" +
 			")",
 	}, sql)
 
@@ -104,10 +88,10 @@ func (t *sqlServerTest) TestCompileAdd() {
 	sql := t.schema.CompileAdd(bp)
 
 	t.Equal([]string{
-		"ALTER TABLE [users]\n" +
-			"ADD [name] NVARCHAR(50) NOT NULL COMMENT '用户名',\n" +
-			"ADD [age] SMALLINT NOT NULL DEFAULT 18 COMMENT '年龄',\n" +
-			"ADD [sex] NVARCHAR(1) NOT NULL DEFAULT '0' COMMENT '性别'",
+		"ALTER TABLE \"users\"\n" +
+			"ADD \"name\" NVARCHAR(50) NOT NULL,\n" +
+			"ADD \"age\" SMALLINT NOT NULL DEFAULT '18',\n" +
+			"ADD \"sex\" NVARCHAR(1) NOT NULL DEFAULT '0'",
 	}, sql)
 
 	t.T().Log(sql)
@@ -122,9 +106,9 @@ func (t *sqlServerTest) TestCompileChange() {
 	sql := t.schema.CompileChange(bp)
 
 	t.Equal([]string{
-		"ALTER TABLE [users]\n" +
-			"ALTER COLUMN [name] NVARCHAR(50) NOT NULL,\n" +
-			"ALTER COLUMN [age] SMALLINT NOT NULL DEFAULT 19 COMMENT '年龄'",
+		"ALTER TABLE \"users\"\n" +
+			"ALTER COLUMN \"name\" NVARCHAR(50) NOT NULL,\n" +
+			"ALTER COLUMN \"age\" SMALLINT NOT NULL DEFAULT '19'",
 	}, sql)
 
 	t.T().Log(sql)
@@ -138,9 +122,9 @@ func (t *sqlServerTest) TestCompileDropColumn() {
 	sql := t.schema.CompileDropColumn(bp)
 
 	t.Equal([]string{
-		"ALTER TABLE [users]\n" +
-			"DROP COLUMN [age],\n" +
-			"DROP COLUMN [sex]",
+		"ALTER TABLE \"users\"\n" +
+			"DROP COLUMN \"age\",\n" +
+			"DROP COLUMN \"sex\"",
 	}, sql)
 
 	t.T().Log(sql)
@@ -153,7 +137,7 @@ func (t *sqlServerTest) TestCompileDrop() {
 
 	sql := t.schema.CompileDrop(bp)
 
-	t.Equal([]string{"DROP TABLE [users]"}, sql)
+	t.Equal([]string{"DROP TABLE \"users\""}, sql)
 
 	t.T().Log(sql)
 }
@@ -164,7 +148,7 @@ func (t *sqlServerTest) TestCompileDropIfExists() {
 	bp.Drop()
 
 	sql := t.schema.CompileDropIfExists(bp)
-	t.Equal([]string{"DROP TABLE IF EXISTS [users]"}, sql)
+	t.Equal([]string{"DROP TABLE IF EXISTS \"users\""}, sql)
 
 	t.T().Log(sql)
 }
@@ -176,7 +160,7 @@ func (t *sqlServerTest) TestCompileRename() {
 
 	sql := t.schema.CompileRename(bp)
 
-	t.Equal([]string{"EXEC sp_rename [users], [user]"}, sql)
+	t.Equal([]string{"EXEC sp_rename \"users\", \"user\""}, sql)
 
 	t.T().Log(sql)
 }