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SQL variable to hold list of integers
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Thanks for that but again it requires me to rewrite the way the variable is read in the query. I have to keep it the same.
– ErickTreetops
Aug 27 '13 at 1:20
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Check if a key exists inside a json object
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For edification, what, if any, is the difference between if(thisSession.merchant_id !== undefined) and if(thisSession.hasOwnProperty('merchant_id')) or is it doing the same thing behind the scenes?
– zer...
How to reset sequence in postgres and fill id column with new data?
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Best answer for my case too. I combine this answer with this one, which explains the ALTER SEQUENCE command ... so I changed 'seq' by mytable_id_seq where 'mytable' is my table name and 'id' is the name of my serial column
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Best practice for nested fragments in Android 4.0, 4.1 (
I'm writing an app for 4.0 and 4.1 tablets, for which I do not want to use the support libraries (if not needed) but the 4.x api only therefore.
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MySQL Error 1093 - Can't specify target table for update in FROM clause
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Update: This answer covers the general error classification. For a more specific answer about how to best handle the OP's exact query, please see other answers to this question
In MySQL, you can't modify the same table which you use in the SELECT part.
This behaviour is documented at:...
Difference Between One-to-Many, Many-to-One and Many-to-Many?
...ectional is an engineering decision that trades off memory, processing, performance, etc.
What can be confusing is that a Many-To-Many Bidirectional relationship does not need to be symmetric! That is, a bunch of People could point to a skill, but the skill need not relate back to just those peopl...
SQL JOIN - WHERE clause vs. ON clause
... Orders.ID = 12345
The first will return an order and its lines, if any, for order number 12345. The second will return all orders, but only order 12345 will have any lines associated with it.
With an INNER JOIN, the clauses are effectively equivalent. However, just because they are functionally...
How to properly create composite primary keys - MYSQL
...rement surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
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Correct use of Multimapping in Dapper
...big caveat here, if the column ordering in the underlying table is flipped for some reason:
ProductID | ProductName | AccountOpened | CustomerName | CustomerId
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splitOn: CustomerId will result in a null customer name.
If yo...
DISTINCT for only one column
... I must investigate this PARTITION clause, never seen it in action before. Thanks for the example
– LorenVS
Feb 16 '11 at 20:41
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