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How to create a multi-tenant database with shared table structures?
Our software currently runs on MySQL. The data of all tenants is stored in the same schema. Since we are using Ruby on Rails we can easily determine which data belongs to which tenant. However there are some companies of course who fear that their data might be compromised, so we are evaluating othe...
What does the LayoutInflater attachToRoot parameter mean?
... documentation isn't exactly clear to me about the purpose of the attachToRoot parameter.
12 Answers
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How to check permissions of a specific directory?
...tfacl, stat.
For Dir
[flying@lempstacker ~]$ ls -ldh /tmp
drwxrwxrwt. 23 root root 4.0K Nov 8 15:41 /tmp
[flying@lempstacker ~]$ namei -l /tmp
f: /tmp
dr-xr-xr-x root root /
drwxrwxrwt root root tmp
[flying@lempstacker ~]$ getfacl /tmp
getfacl: Removing leading '/' from absolute path names
# file...
NGinx Default public www location?
... have worked with Apache before, so I am aware that the default public web root is typically /var/www/ .
30 Answers
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Escaping ampersand character in SQL string
...
Note that & doesn't need to be escaped in MySQL. Also MySQL doesn't have the function CHR().
– asmaier
Jun 18 at 11:24
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Create a temporary table in a SELECT statement without a separate CREATE TABLE
...STS table2 AS (SELECT * FROM table1)
From the manual found at http://dev.mysql.com/doc/refman/5.7/en/create-table.html
You can use the TEMPORARY keyword when creating a table. A TEMPORARY table is visible only to the current session, and is dropped automatically when the session is closed. Thi...
Useful GCC flags for C
...rning.
-Waggregate-return: warn if any functions that return structures or unions are defined or called.
-Wcast-qual: warn whenever a pointer is cast to remove a type qualifier from the target type*.
-Wswitch-default: warn whenever a switch statement does not have a default case*.
-Wswitch-enum: war...
How to return a value from a Form in C#?
...nly a date is needed
//but normally I include optional data (as if a C UNION type)
//the form that responds to the event decides if
//the data is for it.
public DateTime date { get; set; }
//CI_STOCKIN
public StockClass inStock { get; set; }
}
Then use the delegate within ...
How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
...urn intermediate concatenations that will be
-- filtered out later on
UNION ALL
SELECT
c.VehicleID,
(c.Cities + ', ' + l.City) Cities,
l.Rank
FROM
Concatenations c -- this is a recursion!
INNER JOIN RankedLocations l ON
l.VehicleID = c.VehicleID
AND l.R...
Postgres: INSERT if does not exist already
...le in Postgres:
INSERT INTO person (name)
SELECT name FROM person
UNION
VALUES ('Bob')
EXCEPT
SELECT name FROM person;
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