Re: String concatenation work in version 8.2.11 and 8.3.6

Hi Tony,

Its not a bug - automatic casting was removed in 8.3. You should cast( a as text)||cast(b ... = cast(123456 as text). Other option is to define your own operators which is to be used only in case you can not fix clients of your database...

Tony Liao rašė:

hi,all
     for example tableA
     create table tableA (
      id serial,
      a integer,
      b integer,
      c integer
     );
     insert into tableA (a,b,c) values (12,34,56);

then,
     select id from tableA where (a||b||c)=123456;
     in postgresql version 8.2.11,it works.
     but in postgresql version 8.3.6,the error as bellow:
      ERROR:  operator does not exist: integer || integer
      LINE 1: select id from tableA where (a||b||c)=123456;
                                     ^
      HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.

is it a bug in 8.2.11 or I install 8.3.6 not completely?

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Julius Tuskenis
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UAB nSoft
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