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Best way to test for a variable's existence in PHP; isset() is clearly broken
...didate for a terminal value because some_function has an extremely unpredictable return type (which is probably a bad sign in itself), then an additional boolean value, e.g. $found, could be used instead.
Thought experiment one: the very_null constant
PHP could theoretically provide a special cons...
Find the number of columns in a table
It is possible to find the number of rows in a table:
19 Answers
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Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
...or your helpful explanation and answer. Actually here I am including three table so I don't know how I can add the three tables with INCLUDE. can you please help me on this please.
– barsan
Aug 23 '13 at 8:59
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Dashed line border around UIView
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hey i applied this code to label on table view cell but it give small size of border how can i correct this.
– Chaudhary Ankit Deshwal
Jun 6 '16 at 19:28
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Can someone explain mappedBy in JPA and Hibernate?
...irline that it is responsible for maintaining the values over in the other table. It is possible to tell an Entity it "owns" a column in a different table and is responsible for updating it. It's not something you usually want to do and can cause problems with the order SQL statements are executed...
Is generator.next() visible in Python 3?
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Try:
next(g)
Check out this neat table that shows the differences in syntax between 2 and 3 when it comes to this.
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Is there any difference between GROUP BY and DISTINCT
...river :: GroupBy : Distinct and screw => get list of unique values in a table column)
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sql query to return differences between two tables
I am trying to compare two tables, SQL Server, to verify some data. I want to return all the rows from both tables where data is either in one or the other. In essence, I want to show all the discrepancies. I need to check three pieces of data in doing so, FirstName, LastName and Product.
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How to get all columns' names for all the tables in MySQL?
Is there a fast way of getting all column names from all tables in MySQL , without having to list all the tables?
10 Answe...
How can I find which tables reference a given table in Oracle SQL Developer?
In Oracle SQL Developer , if I'm viewing the information on a table, I can view the constraints, which let me see the foreign keys (and thus which tables are referenced by this table), and I can view the dependencies to see what packages and such reference the table. But I'm not sure how to find wh...