!93 feat: DBMS支持mssql和一些功能优化

* feat: 表格+表格元数据缓存
* feat:跳板机支持多段跳
* fix: 所有数据库区分字段主键和自增
* feat: DBMS支持mssql
* refactor: 去除无用的getter方法

server/internal/db/dbm/mssql/meta.go

@@ -0,0 +1,48 @@
+package mssql
+
+import (
+	"database/sql"
+	"fmt"
+	_ "github.com/microsoft/go-mssqldb"
+	"mayfly-go/internal/db/dbm/dbi"
+	"net/url"
+	"strings"
+)
+
+func init() {
+	meta := new(Meta)
+	dbi.Register(dbi.DbTypeMssql, meta)
+}
+
+type Meta struct {
+}
+
+func (md *Meta) GetSqlDb(d *dbi.DbInfo) (*sql.DB, error) {
+	err := d.IfUseSshTunnelChangeIpPort()
+	if err != nil {
+		return nil, err
+	}
+	query := url.Values{}
+	// The application name (default is go-mssqldb)
+	query.Add("app name", "mayfly")
+	// 指定与服务器协商加密的最低TLS版本
+	query.Add("tlsmin", "1.0")
+	// 连接超时时间10秒
+	query.Add("connection timeout", "10")
+	if d.Database != "" {
+		ss := strings.Split(d.Database, "/")
+		if len(ss) > 1 {
+			query.Add("database", ss[0])
+			query.Add("schema", ss[1])
+		} else {
+			query.Add("database", d.Database)
+		}
+	}
+	const driverName = "mssql"
+	dsn := fmt.Sprintf("sqlserver://%s:%s@%s:%d?%s", url.PathEscape(d.Username), url.PathEscape(d.Password), d.Host, d.Port, query.Encode())
+	return sql.Open(driverName, dsn)
+}
+
+func (md *Meta) GetDialect(conn *dbi.DbConn) dbi.Dialect {
+	return &MssqlDialect{conn}
+}