Re: string functions and operators
От | John R Pierce |
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Тема | Re: string functions and operators |
Дата | |
Msg-id | 4BA83A3C.5080602@hogranch.com обсуждение исходный текст |
Ответ на | string functions and operators (Neil Stlyz <neilstylz@yahoo.com>) |
Список | pgsql-general |
Neil Stlyz wrote: > Hello, > > I have a dilema and I was hoping someone here may offer guidance or > assistance. I bet this is a very simple question for someone out there > but I am having problems coming up with a solution. Here it is... > > suppose I have a field with the following values: > > 77.1 > 77.2 > 134.1 > 134.2 > 134.3 > 5.1 > 5.2 > > I need two seperate SELECT queries. One would return the following > values (everything left of the decimal point) > > 77 > 77 > 134 > 134 > 5 > 5 > > The second query would return all of the values to the right of the > decimal point: > > 1 > 2 > 1 > 2 > 3 > 1 > 2 silly me says.. SELECT FLOOR(x), x-FLOOR(x) FROM TABLE; at least for numeric values. but, in string space, ummmm... select split_part(x,'.',1), split_part(x,'.',2) from table; or select regexp_replace(x, '\.[0-9]*$',''), regexp_replace(x,'^[0-9]*\.','') from table; or god knows how many others.
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