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Using group by on multiple columns
...one group.
To illustrate using an example, let's say we have the following table, to do with who is attending what subject at a university:
Table: Subject_Selection
+---------+----------+----------+
| Subject | Semester | Attendee |
+---------+----------+----------+
| ITB001 | 1 | John ...
Export Postgresql table data using pgAdmin
...
Just right click on a table and select "backup". The popup will show various options, including "Format", select "plain" and you get plain SQL.
pgAdmin is just using pg_dump to create the dump, also when you want plain SQL.
It uses something lik...
Select all columns except one in MySQL?
...g to use a select statement to get all of the columns from a certain MySQL table except one. Is there a simple way to do this?
...
Convert base64 string to ArrayBuffer
... are working with ASCII representation of the data (which is also an 8-bit table)..
– Goran.it
Jun 17 '16 at 12:57
3
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How does one generate a random number in Apple's Swift language?
...near, additive feedback, random number generator, employing a default table of size 31 long integers. It returns successive pseudo-random numbers in the range from 0 to (231)-1. The period of this random number generator is very large, approximately 16*((231)-1)." ... Thanks a lot a...
SQL error “ORA-01722: invalid number”
...er, and the string cannot be converted into a number.
Without seeing your table definition, it looks like you're trying to convert the numeric sequence at the end of your values list to a number, and the spaces that delimit it are throwing this error. But based on the information you've given us, ...
What is the difference between bottom-up and top-down?
...ds the root.
Tabulation - You can also think of dynamic programming as a "table-filling" algorithm (though usually multidimensional, this 'table' may have non-Euclidean geometry in very rare cases*). This is like memoization but more active, and involves one additional step: You must pick, ahead of...
Remove Trailing Spaces and Update in Columns in SQL Server
I have trailing spaces in a column in a SQL Server table called Company Name .
13 Answers
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Change Schema Name Of Table In SQL
I want to change schema name of table Employees in Database. In the current table Employees database schema name is dbo I want to change it to exe . How can I do it ?
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SQL Server Linked Server Example Query
...at should probably be:
<server>.<database>.<schema>.<table>
For example:
DatabaseServer1.db1.dbo.table1
Update: I know this is an old question and the answer I have is correct; however, I think any one else stumbling upon this should know a few things.
Namely, when que...