From 451f81287a55b9aa8c2b2c33da1fc7028fb4517f Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Tue, 3 Nov 2020 14:13:04 +0800
Subject: [PATCH] Fix bug

---
 internal/statements/query.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/statements/query.go b/internal/statements/query.go
index 69f48e73..76946cbd 100644
--- a/internal/statements/query.go
+++ b/internal/statements/query.go
@@ -247,6 +247,9 @@ func (statement *Statement) genSelectSQL(columnStr string, needLimit, needOrderB
 			top = fmt.Sprintf("TOP %d ", LimitNValue)
 		}
 		if statement.Start > 0 {
+			if statement.RefTable == nil {
+				return "", nil, errors.New("Unsupported query limit without reference table")
+			}
 			var column string
 			if len(statement.RefTable.PKColumns()) == 0 {
 				for _, index := range statement.RefTable.Indexes {