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php Programming Glossary: ifnullFinding free blocks of time in mysql and php? http://stackoverflow.com/questions/11262260/finding-free-blocks-of-time-in-mysql-and-php modified query SELECT a.id a.end_hour AS `Free time Start` IFNULL la.start_hour a.end_hour AS `Free Time End` IFNULL TIMEDIFF.. Start` IFNULL la.start_hour a.end_hour AS `Free Time End` IFNULL TIMEDIFF la.start_hour a.end_hour '00 00 00' AS `Total Free.. a long offset and limit starting from 1 instead of zero IFNULL usage ifnull 'if here comes null' 'select this then' share..
Calculating total quantity of equipments for a date range http://stackoverflow.com/questions/12109737/calculating-total-quantity-of-equipments-for-a-date-range that intersect with the given range SELECT MAX available IFNULL SUM amountInSch 0 FROM Table1 LEFT JOIN Table3 USING eqid LEFT..
counting data and grouping by week in mysql http://stackoverflow.com/questions/3640729/counting-data-and-grouping-by-week-in-mysql something like this SELECT n.name w1.amount w2.amount ... IFNULL w1.amount 0 IFNULL w2.amount 0 .... AS total FROM yourTable.. SELECT n.name w1.amount w2.amount ... IFNULL w1.amount 0 IFNULL w2.amount 0 .... AS total FROM yourTable AS n LEFT JOIN SELECT..
Selecting the last 7 days from Now() in MYSQL http://stackoverflow.com/questions/7341658/selecting-the-last-7-days-from-now-in-mysql get_results SELECT wp_pixelcart_calendar.datefield AS DATE IFNULL SUM wp_pixelcart_daily_sales.quantity 0 AS total_sales FROM..
Codeigniter ActiveRecord: join backticking http://stackoverflow.com/questions/7860441/codeigniter-activerecord-join-backticking query SELECT terem.nev terem_nev elem_tipus.nev tipus_nev IFNULL cimke.nev tanar.nev nev FROM mk_terem LEFT JOIN terem ON mk_terem.id_terem..
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