大约有 43,000 项符合查询结果（耗时：0.0412秒） [XML]
How to make EditText not editable through XML in Android?
...r example, the default editText is said to be single line. But you have to select an inputType for it to be single line. And if you select "none", it is still multiline.
Error 1022 - Can't write; duplicate key in table
...ere the constraints are currently in use you can use the following query:
SELECT `TABLE_SCHEMA`, `TABLE_NAME`
FROM `information_schema`.`KEY_COLUMN_USAGE`
WHERE `CONSTRAINT_NAME` IN ('iduser', 'idcategory');
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How to create a multiline UITextfield?
...tiline text.
In Interface Builder, add a UITextView where you want it and select the "editable" box. It will be multiline by default.
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How can I escape square brackets in a LIKE clause?
...or the characters % and _.
Here's a good article with some more examples
SELECT columns FROM table WHERE
column LIKE '%[[]SQL Server Driver]%'
-- or
SELECT columns FROM table WHERE
column LIKE '%\[SQL Server Driver]%' ESCAPE '\'
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Why is lazy evaluation useful?
...
@Viclib A selection algorithm for finding the top k elements out of n is O(n + k log k). When you implement quicksort in a lazy language, and only evaluate it far enough to determine the first k elements (stopping evaluation after), i...
How Pony (ORM) does its tricks?
...s query:
>>> from pony.orm.examples.estore import *
>>> select(c for c in Customer if c.country == 'USA').show()
Which will be translated into the following SQL:
SELECT "c"."id", "c"."email", "c"."password", "c"."name", "c"."country", "c"."address"
FROM "Customer" "c"
WHERE "c"...
Deleting all records in a database table
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Prefer select whenever you need to use an if expression inside a block, this way you avoid having to chain the compact method to remove nil elements.
– Sebastian Palma
Jan 18 '18 at 17:18
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Hibernate error - QuerySyntaxException: users is not mapped [from users]
... bean class name is UserDetails
Query query = entityManager. createQuery("Select UserName from **UserDetails** ");
You do not give your table name on the Db. you give the class name of bean.
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How to delete a certain row from mysql table with same column values?
...ike this:
DELETE FROM your_table WHERE id_users=1 AND id_product=2
LIMIT (SELECT COUNT(*)-1 FROM your_table WHERE id_users=1 AND id_product=2)
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Visual Studio: ContextSwitchDeadlock
... aspect of the UI. Tools\Customize, then Rearrange Commands (button), then Select Debug from drop-down at upper right, then Add (button). Whew!
– SeaDrive
Feb 23 '09 at 17:56
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