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Multiple Updates in MySQL
... is there a way to update multiple rows at once (as in, in one query) in MySQL?
17 Answers
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Count the items from a IEnumerable without iterating?
...some info:
The Count() extension doesn't always iterate. Consider Linq to Sql, where the count goes to the database, but instead of bringing back all the rows, it issues the Sql Count() command and returns that result instead.
Additionally, the compiler (or runtime) is smart enough that it will c...
Query to list all stored procedures
What query can return the names of all the stored procedures in a SQL Server database
23 Answers
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How to use DISTINCT and ORDER BY in same SELECT statement?
...u want to do doesn't work is because of the logical order of operations in SQL, which, for your first query, is (simplified):
FROM MonitoringJob
SELECT Category, CreationDate i.e. add a so called extended sort key column
ORDER BY CreationDate DESC
SELECT Category i.e. remove the extended sort key ...
SQL selecting rows by most recent date
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So this isn't what the requester was asking for but it is the answer to "SQL selecting rows by most recent date".
Modified from http://wiki.lessthandot.com/index.php/Returning_The_Maximum_Value_For_A_Row
SELECT t.chargeId, t.chargeType, t.serviceMonth FROM(
SELECT chargeId,MAX(serviceMonth)...
Current executing procedure name
Is it possible to get the name of the current Stored Procedure in MS SQL Server?
5 Answers
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unresolved reference to object [INFORMATION_SCHEMA].[TABLES]
...g started working. You may also wish to open the Visual Studio Options... SQL Server Tools... Online Editing... enable "Resolve references to system views and master database objects".
– NYCdotNet
Jul 24 '17 at 15:34
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Proper Repository Pattern Design in PHP?
...ea where the data is stored (meaning it can be changed).
Example to show a SQL implementation (most common).
For maximum performance, controllers should only receive the data they need—no extra fields.
Implementation should leverage some type of data mapper for ease of development.
Implementation ...
Want to find records with no associated records in Rails
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This is still pretty close to SQL, but it should get everyone with no friends in the first case:
Person.where('id NOT IN (SELECT DISTINCT(person_id) FROM friends)')
share
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How can I generate an INSERT script for an existing SQL Server table that includes all stored rows?
...m looking for a way to generate a "Create and insert all rows" script with SQL Management Studio 2008 R2.
4 Answers
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