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Where is the “Fold” LINQ Extension Method?
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Aggregate is a more familiar term in the OO and SQL realms.
– Adam Robinson
Aug 5 '09 at 1:27
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将 App Inventor 2 项目连接到外部传感器 · App Inventor 2 中文网
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PostgreSQL: How to change PostgreSQL user password?
How do I change the password for PostgreSQL user?
17 Answers
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Why use the INCLUDE clause when creating an index?
...s such can be used (based on restriction against index-key-columns) - then SQL Server is matching the column-restriction against the index (leaf-node-values) instead of going the expensive way around the table itself.
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Improving bulk insert performance in Entity framework [duplicate]
...se), you can grab the Connection object from the context and use it with a SQLBulkCopy object to load the data.
– Zac Howland
Aug 13 '13 at 17:11
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How can I edit a view using phpMyAdmin 3.2.4?
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try running SHOW CREATE VIEW my_view_name in the sql portion of phpmyadmin and you will have a better idea of what is inside the view
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How many database indexes is too many?
...raised, the Cost Based Optimizer incurs a cost when creating a plan for an SQL statement if there are more indexes because there are more combinations for it to consider. You can reduce this by correctly using bind variables so that SQL statements stay in the SQL cache. Oracle can then do a soft p...
Unique constraint on multiple columns
How do I add a unique constraint for columns fcode, scode, dcode with t-sql and/or management studio ? fcode, scode, dcode must be unique together.
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Where IN clause in LINQ [duplicate]
How to make a where in clause similar to one in SQL Server?
8 Answers
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MySQL show status - active or total connections?
...Connections
The number of connection attempts (successful or not) to the MySQL server.
You can see the number of active connections either through the Threads_connected status variable:
Threads_connected
The number of currently open connections.
mysql> show status where `variable_name` = 'Thre...