Talk:String concatenation

SQL has string concatentation using infix || in the style of PL/1 but does not have variables as such.

<lang sql>create table foo ( a varchar(10),b varchar(10)); insert into foo values ('hello','dolly'),('l8r','g8r'); select 'greeting is ' ||a ,a ||' '|| b from foo;</lang>

What about select into? I was never sure how SQL-fu like that worked, though. --Mwn3d 04:58, 16 November 2010 (UTC)

select into seems to be a non-standard extension to sql which is mostly used for creating backups of data in existing tables. Here, though, we have three lines -- the first two lines are analogous to variable declaration and variable assignment, and the last line illustrates the task requirement. That said, note that this || mechanism is the ansi standard way to concatenate string (introduced in sql-92) and some implementations of sql (such as mysql) are do not support this syntax. --Rdm 19:28, 16 November 2010 (UTC)