I want to count the number of times a custom predicate is true. For example, I have the following code:
Could anyone let me know how to limit the num开发者_开发技巧ber of values in GROUP_CONCAT for each group in MySQL? I am using the below query which also produces more than 2 concatenated values for ea
I had a problem sorting a paginated list when using a calculated field such as COUNT() in cakephp 1.3
Why is this giving an empty result? I\'m trying to get the min, max, and average of the set of employees who aren\'t supervisors.
I have a mysql database table called \"character\" with columns like name, strength, intelligence, skill. I want to create a column that sums up strength, intelligence and skill AUTOMATICALLY. Is this
I\'m using SQL SERVER 2005 and have a table which stores challans datewise. It has a fiel开发者_如何转开发d \'Quantity\'
I am creating a forum, and have gotten stuck creating the page that will display all the topics for a given forum. The three relevant tables & fields are structured as follows:
I have a bunch of records in a table variable like so: IdProductIdRankRankCreated 112321322011-05-02 212321342011-05-03
I have the following table Use开发者_JS百科r IDStart DateEnd Date -------------------------------------
I am indexing all the columns that I use in my Where / Order by, is there anything else I can do to speed the queries up?
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