大约有 6,000 项符合查询结果（耗时：0.0372秒） [XML]
How would you do a “not in” query with LINQ?
...ms in the first list where Email does not exist in the second list. With SQL I would just use "not in", but I do not know the equivalent in LINQ. How is that done?
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How do I find a stored procedure containing ?
I need to search a SQL server 2008 for stored procedures containing where maybe
the name of a database field or variable name.
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Using varchar(MAX) vs TEXT on SQL Server
...GB of char data) is the recommended replacement for the TEXT datatype in SQL Server 2005 and Next SQL SERVER versions.
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How can I get column names from a table in Oracle?
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In SQL Server...
SELECT [name] AS [Column Name]
FROM syscolumns
WHERE id = (SELECT id FROM sysobjects WHERE type = 'V' AND [Name] = 'Your table name')
Type = 'V' for views
Type = 'U' for tables
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postgresql - sql - count of `true` values
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Since PostgreSQL 9.4 there's the FILTER clause, which allows for a very concise query to count the true values:
select count(*) filter (where myCol)
from tbl;
The above query is a bad example in that a simple WHERE clause would suffice...
How to shrink/purge ibdata1 file in MySQL
I am using MySQL in localhost as a "query tool" for performing statistics in R, that is, everytime I run a R script, I create a new database (A), create a new table (B), import the data into B, submit a query to get what I need, and then I drop B and drop A.
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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 ...
How do you use variables in a simple PostgreSQL script?
For example, in MS-SQL, you can open up a query window and run the following:
10 Answers
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What is your naming convention for stored procedures? [closed]
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Here's some clarification about the sp_ prefix issue in SQL Server.
Stored procedures named with the prefix sp_ are system sprocs stored in the Master database.
If you give your sproc this prefix, SQL Server looks for them in the Master database first, then the context database,...
Rename MySQL database [duplicate]
.... Now I need to change database name to sunhrm . But, It is disabled in MySQL workbench. Can I do that on the Linux server itself?
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