我在SAS里用SQL的UNION ALL FUNCTION连接表.我的CODE:

proc sql;
create table sasuser.summary as
select * from sasuser.Lr_f0
order by client_type, month, health_pla

union all

select * from sasuser.Lr_c0
order by client_type, month, health_pla

union all

select * from sasuser.Lr_id0
order by client_type,month,health_pla;

quit;


给我显示的错误是

ERROR 22-322: Syntax error, expecting one of the following: ;, !, !!, &, (,
*, **, +, ',', -,
              '.', /, <, <=, <>, =, >, >=, ?, AND, ASC, ASCENDING, BETWEEN,
CONTAINS, DESC,
              DESCENDING, EQ, EQT, GE, GET, GT, GTT, IN, IS, LE, LET, LIKE,
LT, LTT, NE, NET,
              NOT, NOTIN, OR, ^, ^=, |, ||, ~, ~=.

ERROR 76-322: Syntax error, statement will be ignored.



我标点符号错了吗? 我是要把三张表合成一张表.在ACCESS里,用这个CODE没问题,SAS里
就不知道了,SAS里该用什么CODE