大约有 6,000 项符合查询结果（耗时：0.0343秒） [XML]
Equals(=) vs. LIKE
When using SQL, are there any benefits of using = in a WHERE clause instead of LIKE ?
15 Answers
...
Reintegrate can only be used if revisions X through Y were previously merged from to reintegra
...8365,18404
Error:
Error: branches/myproject/userdata/auto_create_db.sql
Error:
Error: Missing ranges:
Error: /trunk/userdata/auto_create_db.sql:18406
Error:
Error:
Error: branches/myproject/userdata/create_audit_tables_triggers_uds.sql
Error:
Error: Missing rang...
LEFT OUTER JOIN in LINQ
...roups.Name
}
);
var xy = (query2).ToList();
When used with LINQ 2 SQL it will translate nicely to the following very legible SQL query:
SELECT
users.USR_ID AS UserId
,users.USR_User AS UserName
,groups.ID AS UserGroupId
,groups.Name AS GroupName
FROM T_User AS users
...
How to filter SQL results in a has-many-through relation
... skin a cat?
The precise cat-skinning environment for this test:
PostgreSQL 9.0 on Debian Squeeze with decent RAM and settings.
6.000 students, 24.000 club memberships (data copied from a similar database with real life data.)
Slight diversion from the naming schema in the question: student.id is...
BACKUP LOG cannot be performed because there is no current database backup
...
Please see below image and apply changes in SqlServer :
first right click on Database --> Task --> Restore --> Select Backup File -->
Finally Apply Change in Options Tab.
share
...
How to create a unique index on a NULL column?
I am using SQL Server 2005. I want to constrain the values in a column to be unique, while allowing NULLS.
4 Answers
...
How can I join multiple SQL tables using the IDs?
...%3a%2f%2fstackoverflow.com%2fquestions%2f9853586%2fhow-can-i-join-multiple-sql-tables-using-the-ids%23new-answer', 'question_page');
}
);
Post as a guest
Na...
What's wrong with nullable columns in composite primary keys?
...
In Sql Server a unique constraint that has a nullable column, allows the value 'null' in that column only once (given identical values for the other columns of the constraint). So such a unique constraint essentially behaves lik...
云数据及Firebase组件简介 · App Inventor 2 中文网
...性可能会根据用户评论而更改。 特别是，此实验版本不包括将其与您自己的 Firebase 帐户一起使用的功能，而只能与 MIT 的默认帐户一起使用。 麻省理工学院计划在我们获得更多使用该组件的经验后，为人们提供一种获取自己的 ...
Extracting hours from a DateTime (SQL Server 2005)
...omoting lazy shorthand that leads to confusion or worse. See #6 here blogs.sqlsentry.com/aaronbertrand/… and sqlblog.com/blogs/aaron_bertrand/archive/2011/09/20/…
– Aaron Bertrand
Oct 6 '14 at 19:44
...