增加mysql对procedure语法的识别

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

@@ -134,6 +134,11 @@ public class Keywords {
         map.put("WITH", Token.WITH);
         map.put("GRANT", Token.GRANT);
         map.put("REVOKE", Token.REVOKE);
+        
+        // MySql procedure by:zz
+        map.put("WHILE", Token.WHILE);
+        map.put("DO", Token.DO);
+        map.put("DECLARE", Token.DECLARE);
 
         DEFAULT_KEYWORDS = new Keywords(map);
     }

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

@@ -128,6 +128,10 @@ public enum Token {
     SHOW("SHOW"),
     REPLACE("REPLACE"),
     
+    // MySql procedure by:zz
+    WHILE("WHILE"),
+    DO("DO"),
+    
     //postgresql
     WINDOW("WINDOW"),
     OFFSET("OFFSET"),