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Can I have multiple primary keys in a single table?
Can I have multiple primary keys in a single table?
12 Answers
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Left Join With Where Clause
I need to retrieve all default settings from the settings table but also grab the character setting if exists for x character.
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How to copy data from one table to another new table in MySQL?
I want to copy data from one table to another in MySQL.
11 Answers
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INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
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In your table dbo.Sup_Item_Cat, it has a foreign key reference to another table. The way a FK works is it cannot have a value in that column that is not also in the primary key column of the referenced table.
If you have SQL Server ...
How to maintain aspect ratio using HTML IMG tag
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Now supported on Edge 16+, see table: w3schools.com/css/css3_object-fit.asp
– Eddy R.
Feb 2 at 7:01
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Foreign Key to non-primary key
I have a table which holds data, and one of those rows needs to exist in another table. So, I want a foreign key to maintain referential integrity.
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How can I create a table with borders in Android?
I use a table layout to display data as table, but I want a table with user-defined columns and rows with borders. Suggestions?
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Check if all elements in a list are identical
... explanation of alternatives. Can you please double check your performance table - is it all in msec, and are the numbers in the correct cells?
– max
Oct 2 '10 at 8:26
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Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
...o use query hints, restructure the query, update statistics, use temporary tables, add indexes, and so on to get better performance.
As for your question. The performance of CTEs and subqueries should, in theory, be the same since both provide the same information to the query optimizer. One diff...
SQL WHERE ID IN (id1, id2, …, idn)
...DMS and so you would need us use @Ed Guiness's solution but here temporary tables do differ between RDBMS. (Effectively for complex problems you can't use just pure standard SQL)
– mmmmmm
Apr 27 '11 at 12:27
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