On Sunday 08 April 2007 12:47 pm, Karthikeyan Sundaram wrote: > Hi Everybody, > > I am using Postgres 8.1.0 and I have a requirement. > > I have a table > > create table weekly_tbl (id int, week_flag bit(7) not null default > '1111111'); > > I want to create a function like this > > create function week_func (int) returns weekly_tbl as > $$ > select id, > substr(week_flag,1,1) as monday_flag, > substr(week_flag,2,1) as tuesday_flag, > substr(week_flag,3,1) as wednesday_flag, > substr(week_flag,4,1) as thursday_flag, > substr(week_flag,5,1) as friday_flag, > substr(week_flag,6,1) as saturday_flag, > substr(week_flag,7,1) as sunday_flag > from weekly_tbl where id=$1; > $$ > language SQL; > > I am getting an error message > ERROR: function substr(bit, integer, integer) does not existHINT: No > function matches the given name and argument types. You may need to add > explicit type casts.CONTEXT: SQL function "week_func" > > I know I can do this in view. But for a purpose, I don't want to do it in > view. Can somebody help me? > > Regards > skarthi The problem is with your use of the substr() function. You are passing it a field of type bit (week_flag) where the function needs a text type. See the documentation for bit functions- http://www.postgresql.org/docs/8.2/interactive/functions-bitstring.html There are some bit compatible string functions mentioned. -- Adrian Klaver aklaver@xxxxxxxxxxx
