| From: | Richard NAGY <richard(at)presenceweb(dot)com> |
|---|---|
| To: | pgsql-sql(at)postgresql(dot)org |
| Subject: | translation from ORACLE |
| Date: | 2000-05-15 17:09:25 |
| Message-ID: | 39202F45.6B31B508@presenceweb.com |
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| Thread: | |
| Lists: | pgsql-sql |
I try to translate a database from Oracle to Postgress. for this reason, i search 3 functions :
nvl, max and to_char.
ORACLE : ex : EXEC SQL SELECT nvl (attribut, "defaultString") INTO : vattribut FROM ... : if there
is no attribut satisfying the select vattribut will be equal to attribut , else vattribut will be
equal to attribut.
EXEC SQL SELECT max(attribut) .... will give the bigger attribut.
EXEC SQL SELECT to_char(attribut, 'DD-MM-YYYY') ... attribut will be a
string in the form '01-02-99'
I didn't find this 3 functions in Postgress, can you give me them and their syntax. thanks.
--
Christine
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