sql - How to make a update query in Oracle using "With" statement shorter? -


I am creating an update query.

But it is very messy due to repeated use of "confession" statement.

Do you consider any to reduce it?

The sample query is below. 

  Update Table 1 SET C1 = (select from W_VIEW (select from tab 1) Select C_VALUE to W_VIEW where 2 ROWNUM = 1) where in C2 (with W_VIEW as ( Select from * Tab 1) Select C2_VALUES from W_VIEW where STH & lt; 10);   
 I just want to use W_VIEW once.  
 For example, with  
  as W_VIEW (select from * tab3) update tab 1 SET C1 = (select C_VALUE to W_VIEW where 2 ROWNUM = 1) Where C 2 IN (SELECT C2_VALUES WHERE STH <10) from   
 I would be happy if this question is working :)   
 
 
 Perhaps this one:  
 with  update as w_view (select from Table 1) (select * From the table 1 where in C2 (choose from c2_values ​​w_view where sth> 10)) SET c1 = (SELECT c_value w_view where rownum = 1)

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