Thanks Pavel Great !!
I was thinking both || and CANCAT does same Thanks again - Sridhar OpenText On Thu, May 12, 2016 at 2:22 PM, Pavel Stehule <pavel.steh...@gmail.com> wrote: > Hi > > 2016-05-12 10:47 GMT+02:00 Sridhar N Bamandlapally <sridhar....@gmail.com> > : > >> Hi >> >> In migration, am facing issue with NULL concatenation in plpgsql, >> by concatenating NULL between any where/position to Text / Varchar, the >> total string result is setting value to NULL >> >> >> *In Oracle:* >> >> declare >> txt1 VARCHAR2(100) := 'ABCD'; >> txt2 VARCHAR2(100) := NULL; >> txt3 VARCHAR2(100) := 'EFGH'; >> txt VARCHAR2(100) := NULL; >> begin >> txt:= txt1 || txt2 || txt3; >> dbms_output.put_line (txt); >> end; >> / >> >> abcdefgh *===>return value* >> >> >> >> *In Postgres* >> >> do $$ >> declare >> txt1 text := 'ABCD'; >> txt2 text := NULL; >> txt3 text := 'EFGH'; >> txt text := NULL; >> begin >> txt:= txt1 || txt2 || txt3; >> raise notice '%', txt; >> end$$ language plpgsql; >> >> NOTICE: <NULL> *===> return value* >> >> >> SQL-Server also does same like Oracle >> >> Is there any way alternate we have for same behavior in PostgreSQL >> > > use function concat > http://www.postgresql.org/docs/9.5/static/functions-string.html > > postgres=# select concat('AHOJ', NULL,'XXX'); > concat > --------- > AHOJXXX > (1 row) > > Regards > > Pavel > > >> Please >> >> Thanks >> Sridhar >> OpenText >> >> >
