From ee64beb73ba5733e5427caeef015e1fcde965860 Mon Sep 17 00:00:00 2001
From: button-chen <727690080@qq.com>
Date: Wed, 13 Feb 2019 12:37:14 +0800
Subject: [PATCH] =?UTF-8?q?fix=20bug=20in=20oracle=EF=BC=9A=20engine.Table?=
 =?UTF-8?q?(tablename).Exist()=20(#1227)?=
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---
 session_exist.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/session_exist.go b/session_exist.go
index 5d3969f9..6aa154aa 100644
--- a/session_exist.go
+++ b/session_exist.go
@@ -42,6 +42,8 @@ func (session *Session) Exist(bean ...interface{}) (bool, error) {
 
 				if session.engine.dialect.DBType() == core.MSSQL {
 					sqlStr = fmt.Sprintf("SELECT TOP 1 * FROM %s WHERE %s", tableName, condSQL)
+				} else if session.engine.dialect.DBType() == core.ORACLE {
+					sqlStr = fmt.Sprintf("SELECT * FROM %s WHERE (%s) AND ROWNUM=1", tableName, condSQL)
 				} else {
 					sqlStr = fmt.Sprintf("SELECT * FROM %s WHERE %s LIMIT 1", tableName, condSQL)
 				}
@@ -49,6 +51,8 @@ func (session *Session) Exist(bean ...interface{}) (bool, error) {
 			} else {
 				if session.engine.dialect.DBType() == core.MSSQL {
 					sqlStr = fmt.Sprintf("SELECT TOP 1 * FROM %s", tableName)
+				} else if session.engine.dialect.DBType() == core.ORACLE {
+					sqlStr = fmt.Sprintf("SELECT * FROM  %s WHERE ROWNUM=1", tableName)
 				} else {
 					sqlStr = fmt.Sprintf("SELECT * FROM %s LIMIT 1", tableName)
 				}