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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
While executing an INSERT statement with many rows, I want to skip duplicate entries that would otherwise cause failure. After some research, my options appear to be the use of either:
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Automatically deleting related rows in Laravel (Eloquent ORM)
When I delete a row using this syntax:
13 Answers
13
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rails 3 validation on uniqueness on multiple attributes
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In Rails 2, I would have written:
validates_uniqueness_of :zipcode, :scope => :recorded_at
In Rails 3:
validates :zipcode, :uniqueness => {:scope => :recorded_at}
For multiple attributes:
validates :zipcode, :...
Socket.IO - how do I get a list of connected sockets/clients?
I'm trying to get a list of all the sockets/clients that are currently connected.
26 Answers
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Sequelize.js delete query?
Is there a way to write a delete/deleteAll query like findAll?
9 Answers
9
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How to change identity column values programmatically?
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You need to
set identity_insert YourTable ON
Then delete your row and reinsert it with different identity.
Once you have done the insert don't forget to turn identity_insert off
set identity_insert YourTable OFF
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How to check if a Constraint exists in Sql server?
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try this:
SELECT
*
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
WHERE CONSTRAINT_NAME ='FK_ChannelPlayerSkins_Channels'
-- EDIT --
When I originally answered this question, I was thinking "Foreign Key" because the original question asked ...
1052: Column 'id' in field list is ambiguous
...have 2 tables. tbl_names and tbl_section which has both the id field in them. How do I go about selecting the id field, because I always get this error:
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Is there an auto increment in sqlite?
I am trying to create a table with an auto-incrementing primary key in Sqlite3 . I am not sure if this is really possible, but I am hoping to only have to designate the other fields.
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How do I set the offset for ScrollSpy in Bootstrap?
I have a site with the navbar fixed on top and 3 divs underneath in the main content area.
12 Answers
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