From dbf8846c78c869817e74b7350c234c835103476c Mon Sep 17 00:00:00 2001
From: Jet Ma <jetmah@gmail.com>
Date: Sat, 3 Nov 2012 15:38:59 +0800
Subject: [PATCH] Update
 src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
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修改了当字段前面加上负号无法处理的bug
---
 src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
index d4317e3e32..589a532b49 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
@@ -329,6 +329,10 @@ public class SQLExprParser extends SQLParser {
                         sqlExpr = new SQLNumberExpr(lexer.decimalValue().negate());
                         lexer.nextToken();
                         break;
+                    case IDENTIFIER: // 当负号后面为字段的情况
+                        sqlExpr = new SQLIdentifierExpr('-' + lexer.stringVal());
+                        lexer.nextToken();
+                        break;
                     default:
                         throw new ParserException("TODO");
                 }