[SQL] except on nulls?

2000-10-27 Thread Daniel Kalchev
I had the following weird experience. Hopefuly iy's my ignorance on the matter (but I sort of think this worked before...) On PostgreSQL 7.0.2, I have an database with two tables, holding different versions of the data set (some rows missing in one of the tables). Example is: CREATE TABLE "tes

Re: [SQL] Extracting data by months

2000-08-03 Thread Daniel Kalchev
Actually, PostgreSQL has specific function for this purpose. The query would be: SELECT * FROM table WHERE date_part('month', date_field) = '8'; (example to select month 8) If you use date_trunc, the selection will be by month/year - that is, date_trunc('month', date_field) will always result

Re: [SQL] Extracting data by months

2000-08-04 Thread Daniel Kalchev
This is not exactly what the original question was about. You select the month is one specific year only. What you do it however easier achieved by: SELECT datums FROM jaunumi WHERE date_trunc('month', datums) = '2000-08-01'; datetime is an type full of tricks. :-) Daniel >>>"Sandis" said: