select
How do I wait for an EPIPE on Linux and Unix?
I\'m writing a program on Linux in C, and I\'d like to wait (using select or poll) for a pipe file descriptor to become broken, e.g. I\'d like to wait up to the point when a subsequent write(2) would[详细]
2023-04-11 09:35 分类：问答SQL Insert from other table into new table
CREATE TABLE #Temporary ( HoursThisYear int, HoursLastYear int, HoursBefore2010 int ) INSERT INTO #Temporary (HoursThisYear)[详细]
2023-04-11 07:12 分类：问答What's a LINQ query to search through related (1:m) records for a specific string?
I thought I\'d find an answer readily, but not so far. I have related tables -- Blog and Tags. The Tags schema looks like this:[详细]
2023-04-11 03:44 分类：问答mysql select statement result limit
I have query: select id, name from categories where parent开发者_JAVA技巧_id in ( select id from categories[详细]
2023-04-11 03:26 分类：问答Subtracting values in MySQL Table
I have prices in two different tables and want to subtract them (current price-last day price) and ORDER them in DESC form. I was wondering if it can be done using a single MySQL command.[详细]
2023-04-11 02:12 分类：问答SQL Query to Select the 'Next' record (similar to First or Top N)
I need to do a query to return the next (or prev) record if a certain record is not present. For instance consider the following table:[详细]
2023-04-11 02:08 分类：问答How to SELECT DISTINCT of one field and other fields From INNER JOIN table
I use PHP and 开发者_如何转开发MySQL and I have 2 tables: table score: have fields \'user_id\' and \'score\'[详细]
2023-04-10 23:10 分类：问答Select ID given the list of members
I have a table for the link/relationship between two other tables, a table of customers and a table of groups. a group is made up of one or more customers. The link table is like[详细]
2023-04-10 19:43 分类：问答How to populate rails 2 select using helpers and conditions
I\'m working with a simple select like this: <%=select(@file, @file.file_id, File.all.collect {|p| [ p.name, p.id ] }) %>[详细]
2023-04-10 14:25 分类：问答Why FD_SET/FD_ZERO for select() inside of loop?
I am using the select function for communication betwe开发者_JAVA百科en my sockets. I have a while loop and I do -[详细]
2023-04-10 14:13 分类：问答
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