大约有 47,000 项符合查询结果(耗时:0.0287秒) [XML]

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How do I convert an interval into a number of hours with postgres?

... Probably the easiest way is: SELECT EXTRACT(epoch FROM my_interval)/3600 share | improve this answer | follow | ...
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XPath - Selecting elements that equal a value

In Xpath, I am wanting to select elements that equal a specific value. 2 Answers 2 ...
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jQuery UI DatePicker to show month year only

...Text, inst) { $(this).datepicker('setDate', new Date(inst.selectedYear, inst.selectedMonth, 1)); } }); }); </script> <style> .ui-datepicker-calendar { display: none; } </style> </head> <body> ...
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What is the best way to conditionally apply a class?

...ul with an li for each element and a property on the controller called selectedIndex . What would be the best way to add a class to the li with the index selectedIndex in AngularJS? ...
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Best approach to remove time part of datetime in SQL Server

... Strictly, method a is the least resource intensive: a) select DATEADD(dd, DATEDIFF(dd, 0, getdate()), 0) Proven less CPU intensive for same total duration a million rows by some one with way too much time on their hands: Most efficient way in SQL Server to get date from date+ti...
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Convert timestamp to date in MySQL query

... SELECT * FROM users WHERE DATE_FORMAT(FROM_UNIXTIME(users.user_created_at),'%Y-%b-%e') = '2015-03-06' is this correct format or should i modify this? – Dheeraj Thedijje Mar 7 '18 at 11:4...
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MySQL IF NOT NULL, then display 1, else display 0

... SELECT c.name, IF(a.addressid IS NULL,0,1) AS addressexists FROM customers c LEFT JOIN addresses a ON c.customerid = a.customerid WHERE customerid = 123 ...
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Difference between left join and right join in SQL Server [duplicate]

... Select * from Table1 left join Table2 ... and Select * from Table2 right join Table1 ... are indeed completely interchangeable. Try however Table2 left join Table1 (or its identical pair, Table1 right join Table2) to see...
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How to remove all MySQL tables from the command-line without DROP database permissions? [duplicate]

...tatements to execute it: SET FOREIGN_KEY_CHECKS = 0; SET @tables = NULL; SELECT GROUP_CONCAT('`', table_schema, '`.`', table_name, '`') INTO @tables FROM information_schema.tables WHERE table_schema = 'database_name'; -- specify DB name here. SET @tables = CONCAT('DROP TABLE ', @tables); PRE...
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Count Rows in Doctrine QueryBuilder

... Something like: $qb = $entityManager->createQueryBuilder(); $qb->select('count(account.id)'); $qb->from('ZaysoCoreBundle:Account','account'); $count = $qb->getQuery()->getSingleScalarResult(); Some folks feel that expressions are somehow better than just using straight DQL. One...