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How to select all records from one table that do not exist in another table?
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SELECT t1.name
FROM table1 t1
LEFT JOIN table2 t2 ON t2.name = t1.name
WHERE t2.name IS NULL
Q: What is happening here?
A: Conceptually, we select all rows from table1 and for each row we attempt to find a row in table2 with the same value for the name column...
What is Ad Hoc Query?
I'm reading a book about SQL. In that book there's the term Ad Hoc Query , which I don't understand.
10 Answers
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Checking if a SQL Server login already exists
I need to check if a specific login already exists on the SQL Server, and if it doesn't, then I need to add it.
10 Answers
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Store boolean value in SQLite
What is the type for a BOOL value in SQLite? I want to store in my table TRUE/FALSE values.
8 Answers
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Empty set literal?
... You mean there is no literal syntax for the empty set? Or for sets in general?
– Johan Råde
May 25 '11 at 20:23
15
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How to play a notification sound on websites?
When a certain event occurs, I want my website to play a short notification sound to the user.
10 Answers
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How can I display a JavaScript object?
How do I display the content of a JavaScript object in a string format like when we alert a variable?
38 Answers
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Debug code-first Entity Framework migration codes
I'm using Entity Framework code first in my website and I'm just wondering if there is any way to debug the migration codes. You know, like setting breakpoints and stuff like this.
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Browsers' default CSS for HTML elements
Where can I find a browser's default CSS for HTML elements?
4 Answers
4
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Disable JavaScript error in WebBrowser control
I am developing a windows application with a WebBrowser control that navigates to a sharepoint site.
My problem is that i am getting JavaScript error.
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