Jackie Siu wrote: > > Hi, > > Is there exist a function to calculate day difference between two date. For > example: select functionx('1JAN2001','5FEB2001') from abc where .... Then it > returns 36 (days). Thanks for your help. chris=# select ('5feb2001'::date - '1jan2001'::date) as "Days Difference"; Days Difference ----------------- 35 (1 row) chris=# select version(); version --------------------------------------------------------------- PostgreSQL 7.1.1 on i586-pc-linux-gnu, compiled by GCC 2.95.3 (1 row) -- Sincerely etc., NAME Christopher Sawtell CELL PHONE 021 257 4451 ICQ UIN 45863470 EMAIL csawtell @ xtra . co . nz CNOTES ftp://ftp.funet.fi/pub/languages/C/tutorials/sawtell_C.tar.gz -->> Please refrain from using HTML or WORD attachments in e-mails to me <<-- ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://www.postgresql.org/search.mpl