Update Hive常用DML操作.md

notes/Hive常用DML操作.md

@@ -75,11 +75,11 @@ LOAD DATA  INPATH "hdfs://hadoop001:8020/mydir/emp.txt" OVERWRITE INTO TABLE emp
 ### 2.1 语法
 
 ```sql
-INSERT OVERWRITE TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...)
-                                   [IF NOT EXISTS]] select_statement1 FROM from_statement;
+INSERT OVERWRITE TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...) [IF NOT EXISTS]]   
+select_statement1 FROM from_statement;
 
 INSERT INTO TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...)] 
-									select_statement1 FROM from_statement;
+select_statement1 FROM from_statement;
 ```
 
 + Hive 0.13.0开始，建表时可以通过使用TBLPROPERTIES（“immutable”=“true”）来创建不可变表(immutable table) ，如果不可以变表中存在数据，则INSERT INTO失败。（注：INSERT OVERWRITE的语句不受`immutable`属性的影响）;
@@ -243,7 +243,6 @@ DELETE FROM tablename [WHERE expression]
       + 不支持LOAD DATA ...语句。  
       
       ```sql
-      -- 建表语句
       CREATE TABLE emp_ts(  
         empno int,  
         ename String