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What is the difference between JOIN and UNION?
...ubsets it -- completely different operations. Trivial example of UNION:
mysql> SELECT 23 AS bah
-> UNION
-> SELECT 45 AS bah;
+-----+
| bah |
+-----+
| 23 |
| 45 |
+-----+
2 rows in set (0.00 sec)
similary trivial example of JOIN:
mysql> SELECT * FROM
-> (SELECT 2...
How to do joins in LINQ on multiple fields in single join
...... } syntax. LinqPad is a great tool to see how expressions are behaving (SQL script if LINQ2SQL is used, expression trees etc.)
– Alexei
Sep 8 '16 at 14:57
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How do you debug MySQL stored procedures?
...iable at a given point in the script, but is there a better way to debug MySQL stored procedures?
16 Answers
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How do I filter query objects by date range in Django?
...ordjer: Additinally should be said that __range includes the borders (like sql's BETWEEN), if you don't want the borders included you would have to go with my gt/lt solution...
– Bernhard Vallant
Jan 12 '11 at 12:28
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Foreign Key to non-primary key
... This solution is unreliable. See: dba.stackexchange.com/…/how-are-my-sql-server-constraints-being-bypassed
– stomy
Mar 6 at 17:01
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Default value in Doctrine
...es is through the columnDefinition mapping attribute where you specify the SQL snippet (DEFAULT cause inclusive) for the column the field is mapped to.
You can use:
<?php
/**
* @Entity
*/
class myEntity {
/**
* @var string
*
* @Column(name="myColumn", type="string", length=...
How to update only one field using Entity Framework?
...ugh to figure out what columns have indeed changed, and it will create a T-SQL statement to handle just those updates that are in fact necessary.
you define a stored procedure that does exactly what you need, in T-SQL code (just update the Password column for the given UserId and nothing else - ba...
Log all queries in mysql
Is it possible for me to turn on audit logging on my mysql database?
10 Answers
10
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Is there a way to call a stored procedure with Dapper?
... be run using Execute - in both cases (using EXEC <procname>) as the SQL command (plus input parameters as necessary). See the documentation for more details.
As of revision 2d128ccdc9a2 there doesn't appear to be native support for OUTPUT parameters; you could add this, or alternatively cons...
What's the difference between comma separated joins and join on syntax in MySQL? [duplicate]
...here is absolutely no difference in performance. Final version prepared by SQL Server would be the same in both the cases.
– Sateesh Pagolu
Feb 27 '15 at 0:31
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