大约有 1,948 项符合查询结果（耗时：0.0261秒） [XML]
Left Join With Where Clause
...worry about JOIN/WHERE in the main query.
Sometimes, this works faster in MySQL, but compare it against the LEFT JOIN form to see what works best for you.
SELECT s.*, c.value
FROM settings s
LEFT JOIN character_settings c ON c.setting_id = s.id AND c.character_id = '1'
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Changing the maximum length of a varchar column?
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Also it works for MySQL and this question is tagged [TSQL] so it's in the wrong place
– jean
Mar 28 '18 at 10:55
6
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Insert string at specified position
...er than the putinplace function. I was using the later function to parse a mysql query. Although the output looked alright, the query resulted in a error which took me a while to track down. The following is my version of the stringInsert function requiring only one parameter.
function stringInsert...
Could not locate Gemfile
... thor (0.15.4)
Using railties (3.2.11)
Using jquery-rails (2.0.3)
Using mysql2 (0.3.11)
Using net-ldap (0.3.1)
Using ruby-openid (2.1.8)
Using rack-openid (1.3.1)
Using bundler (1.2.3)
Using rails (3.2.11)
Using rmagick (2.13.1)
Your bundle i
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How to reset a single table in rails?
...ipes all data and resets the autoincrement counters in the table. Works in MySQL and Postgres, does not work in Sqlite.
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PostgreSQL query to list all table names?
...hema.tables
WHERE table_type='BASE TABLE'
AND table_schema='public';
For MySQL you would need table_schema='dbName' and for MSSQL remove that condition.
Notice that "only those tables and views are shown that the current user has access to". Also, if you have access to many databases and want to ...
How do I get list of all tables in a database using TSQL?
...ES
WHERE TABLE_TYPE = 'BASE TABLE'
AND TABLE_CATALOG='dbName' --(for MySql, use: TABLE_SCHEMA='dbName' )
PS: For SQL Server 2000:
SELECT * FROM sysobjects WHERE xtype='U'
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django syncdb and an updated model
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If you run Django with Apache and MySQL, restart apache after making migration with makemigrations.
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How to drop a table if it exists?
...MS servers provide, at least, basic INFORMATION_SCHEMA support, including: MySQL, Postgres, Oracle, IBM DB2, and Microsoft SQL Server 7.0 (and greater).
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In bash, how does one clear the current input?
...o that, use Ctrl-U. Ctrl-C is not that bad in bash, but if you have e.g. a mysql client prompt, Ctrl-C will disconnect from the server which is really annoying.
– Christian
Nov 25 '13 at 10:54
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