bug fixed for sql parser

src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java

@@ -365,7 +365,7 @@ public class SQLExprParser extends SQLParser {
 
                     return primaryRest(sqlExpr);
                 } else {
-                    SQLExpr restExpr = equality();
+                    SQLExpr restExpr = relational();
                     sqlExpr = new SQLNotExpr(restExpr);
                 }
                 break;

src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java

@@ -1032,7 +1032,7 @@ public class SchemaStatVisitor extends SQLASTVisitorAdapter {
 
         return false;
     }
-
+    
     public boolean visit(SQLInListExpr x) {
         if (x.isNot()) {
             handleCondition(x.getExpr(), "NOT IN", x.getTargetList());