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初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...插件目录我们能看到innodb_engine.so和libmemcached.so：
mysql> SELECT @@plugin_dir;
+------------------------------+
| @@plugin_dir |
+------------------------------+
| /usr/local/mysql/lib/plugin/ |
+------------------------------+
此外还需要导入Memcached插...
Eclipse: Can you format code on save?
...ces, choose Java --> Editor --> Save Actions. Check the Perform the selected actions on save, and check the Format source code box.
This may or may not be available in previous versions of Eclipse. I know it works in:
Version: 3.3.3.r33x_r20080129-_19UEl7Ezk_gXF1kouft<br>
Build id: M...
Getting the encoding of a Postgres database
...
A programmatic solution:
SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname = 'yourdb';
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SQL Server 2008: how do I grant privileges to a username?
...'
If you need to be more granular, you can use the GRANT command:
GRANT SELECT, INSERT, UPDATE ON dbo.YourTable TO YourUserName
GRANT SELECT, INSERT ON dbo.YourTable2 TO YourUserName
GRANT SELECT, DELETE ON dbo.YourTable3 TO YourUserName
and so forth - you can granularly give SELECT, INSERT, UP...
Can the Android layout folder contain subfolders?
...you backed everything up from step 1!!!)
Right click the res directory and select new > directory.
Name this new directory "layouts". (This can be whatever you want, but it will not be a 'fragment' directory or 'activity' directory, that comes later).
Right click the new "layouts" directory and s...
How to select the row with the maximum value in each group
In a dataset with multiple observations for each subject I want to take a subset with only the maximum data value for each record. For example, with a following dataset:
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Connecting to Azure website via FTP
...re portal the deployment credentials can be set by going to App Services / select relevant app service item / in the Deployment section / Deployment Center / FTP / Dashboard. You can either chose to use the preprovided App Credentials or assign User Credentials.
In the previous generation azure por...
How can I see the specific value of the sql_mode?
...mode. If you set it, then that query will show you the details:
mysql> SELECT @@sql_mode;
+------------+
| @@sql_mode |
+------------+
| |
+------------+
1 row in set (0.00 sec)
mysql> set sql_mode=ORACLE;
Query OK, 0 rows affected (0.00 sec)
mysql> SELECT @@sql_mode;
+-------...
iPhone Simulator suddenly started running very slow
...
Go to the simulator's Debug menu and select "Toggle Slow Animations".
Update: In Xcode 10, it's just "Slow Animations":
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How to fix “Incorrect string value” errors?
...ify that the tables where the data is stored have the utf8 character set:
SELECT
`tables`.`TABLE_NAME`,
`collations`.`character_set_name`
FROM
`information_schema`.`TABLES` AS `tables`,
`information_schema`.`COLLATION_CHARACTER_SET_APPLICABILITY` AS `collations`
WHERE
`tables`.`table_sche...