From d3cc2d6bce3d907794450048125858a34cbee7cb Mon Sep 17 00:00:00 2001
From: u <u@a.com>
Date: Fri, 10 Feb 2023 19:33:41 +0800
Subject: [PATCH] 'fix'

---
 types.go | 6 +++++-
 vql.go   | 3 +++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/types.go b/types.go
index 372833f..7cc67a2 100644
--- a/types.go
+++ b/types.go
@@ -453,7 +453,9 @@ func (q *Query) FromSelect(selectStmt *sqlparser.Select) error {
 			}
 			switch exp := form.Expr.(type) {
 			case sqlparser.TableName:
+				// log.Println("TableName:", jsonEncode(exp))
 				q.From.Table = string(exp.Name.String())
+
 			case *sqlparser.Subquery:
 				subQuery := &Query{}
 				if err := subQuery.FromSelect(exp.Select.(*sqlparser.Select)); err != nil {
@@ -462,6 +464,7 @@ func (q *Query) FromSelect(selectStmt *sqlparser.Select) error {
 				q.From.SubQuery = subQuery
 			}
 		case *sqlparser.JoinTableExpr: //有联表
+			// log.Println("JoinTableExpr:", jsonEncode(form))
 
 			//确定主表
 			leftmost := getTheLeftmost(form)
@@ -480,6 +483,7 @@ func (q *Query) FromSelect(selectStmt *sqlparser.Select) error {
 					}
 					q.From.SubQuery = subQuery
 				}
+
 			} else {
 				//找不到最左边的表
 				return fmt.Errorf("can not find the leftmost table")
@@ -502,7 +506,7 @@ func (q *Query) FromSelect(selectStmt *sqlparser.Select) error {
 					}
 					switch rightExpr := right.Expr.(type) {
 					case sqlparser.TableName:
-						log.Println("rightExpr:", jsonEncode(rightExpr))
+						// log.Println("rightExpr:", jsonEncode(rightExpr))
 						join.Query.From.Table = string(rightExpr.Name.String())
 					case *sqlparser.Subquery:
 						subQuery := &Query{}
diff --git a/vql.go b/vql.go
index 90a238f..e3ae627 100644
--- a/vql.go
+++ b/vql.go
@@ -130,6 +130,9 @@ func (vql *VirtualQL) convert(query *Query, val map[string]interface{}) error {
 		if err != nil {
 			return err
 		}
+		if convertSql == "" {
+			return fmt.Errorf("table %s is not register!", query.From.Table)
+		}
 
 		newAs := query.From.As
 		if newAs == "" {