如何创建这样的一段宏列表

shiyiming

[code:3qwz6wgb]data v;
input var $;
cards;
w1
w2
w3
w4
;[/code:3qwz6wgb]
请问有什么办法能够创建这样一个宏列表：var_list='w1','w2','w3','w4'

shiyiming

[code:2qajvjyw]
proc sql noprint;
select var into :varlist separated by ","
from v;
quit;
%put &varlist.;
[/code:2qajvjyw]

shiyiming

[quote="nobodyknows":r59qr8nq][code:r59qr8nq]
proc sql noprint;
select var into :varlist separated by ","
from v;
quit;
%put &varlist.;
[/code:r59qr8nq][/quote:r59qr8nq]
只有逗号，没有引号啊，请问如果说是要加上引号又该怎么做呢，不清楚怎么弄，还请大侠们点点迷津！
[color=#FF4000:r59qr8nq]’[/color:r59qr8nq]w1[color=#FF0000:r59qr8nq]‘，[/color:r59qr8nq][color=#FF0000:r59qr8nq]’[/color:r59qr8nq]w2[color=#FF0000:r59qr8nq]‘，[/color:r59qr8nq][color=#FF0000:r59qr8nq]‘[/color:r59qr8nq]w3’[color=#FF0000:r59qr8nq]，‘[/color:r59qr8nq]w4’

shiyiming

自己再顶一下....

shiyiming

quote（trim(var))给出的是双引号。
如果实在要单引号，
CATS("'", VAR, "'"), 不过容易出错啊 比如 var =john's

shiyiming

to jingju11
多谢指点 <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->