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Is there a way to access the “previous row” value in a SELECT statement?
I need to calculate the difference of a column between two lines of a table. Is there any way I can do this directly in SQL? I'm using Microsoft SQL Server 2008.
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How do I convert from BLOB to TEXT in MySQL?
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Usage: SELECT CONVERT(column USING utf8) FROM table;
– bmaupin
Oct 2 '12 at 19:32
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Spring JPA selecting specific columns
...ase operations. However I don't know how to select specific columns from a table in Spring JPA?
14 Answers
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How to create a css rule for all elements except one class?
...r my project. Is there any way I can create a css rule that applies to all table elements EXCEPT table elements belonging to the class "dojoxGrid"? Something like:
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Why does Java switch on contiguous ints appear to run faster with added cases?
...ed to sparse), the generated bytecode for your various tests uses a switch table (bytecode instruction tableswitch).
However, once the JIT starts its job and compiles the bytecode into assembly, the tableswitch instruction does not always result in an array of pointers: sometimes the switch table i...
What is the correct way to document a **kwargs parameter?
...t call out kwargs specifically. (other_silly_variable=None)
def fetch_bigtable_rows(big_table, keys, other_silly_variable=None):
"""Fetches rows from a Bigtable.
Retrieves rows pertaining to the given keys from the Table instance
represented by big_table. Silly things may happen if
other_silly_v...
How can I create a unique constraint on my column (SQL Server 2008 R2)?
...@WhiteIsland - You should see it in SSMS object Explorer if you expand the table and look under "Keys"
– Martin Smith
Mar 3 '11 at 18:43
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How do I retrieve my MySQL username and password?
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Stop the MySQL process.
Start the MySQL process with the --skip-grant-tables option.
Start the MySQL console client with the -u root option.
List all the users;
SELECT * FROM mysql.user;
Reset password;
UPDATE mysql.user SET Password=PASSWORD('[password]') WHERE User='[username]';
But DO NO...
How to create a multi-tenant database with shared table structures?
..., it looks like the shared-database, single-schema approach is the most suitable. The fact that you'll be storing just about 50Mb per tenant, and that there will be no per-tenant add-ons, makes this approach even more appropriate.
The MSDN article cited above mentions three security patterns that t...
What's the difference between belongs_to and has_one?
...oreign key is. We can say that a User "has" a Profile because the profiles table has a user_id column. If there was a column called profile_id on the users table, however, we would say that a Profile has a User, and the belongs_to/has_one locations would be swapped.
here is a more detailed explanat...