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Android SQLite: nullColumnHack parameter in insert/replace methods
The Android SDK has some convenience methods for manipulating data with SQLite. However both the insert and replace methods use some nullColumnHack parameter which usage I don't understand.
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你真的了解熊市有多么可怕吗？ - 创意 - 清泛网 - 专注C/C++及内核技术
...情，因为天天都是跌。
每天出现的股评高手，说的都是如何杀跌换股，短线操作而不是持有。
每隔几周，都会出现新底，而且每次有人叫着抄底，接下来就继续地下跌，跌到最后没人说抄底为止。国家出台超过3个以上的利好...
Is HTML considered a programming language? [closed]
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On some level Chris Pietschmann is correct. SQL isn't Turing complete (at least without stored procedures) yet people will list that as a language, TeX is Turing complete but most people regard it as a markup language.
Having said that: if you are just applying for jo...
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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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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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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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...