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Denis de Bernardy

Rating
1559.07 (5,772nd)
Reputation
58,950 (1,576th)
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Title Δ
How to build and optimize MySQL DB for multi-demensional search? -0.43
Optimal way to create a histogram/frequency distribution in Oracle? -1.04
MYSQL - Get rows in all the selected categories +1.05
Getting Maximum Datetime Value Programmatically -0.15
SQL fetch all in a self-join construction +0.67
MYSQL query optimise: build seperate tables with ORDER BY done so d... -2.52
selecting unique ids from two rows 0.00
Translate a string with point sepparated into array keys +2.06
MYSQL query to get records with value that increased most between t... +0.44
Postgres sorting problem 0.00
Relationship between database tables -0.02
Faster search String in Mysql Database -0.21
What is the MySql regex equivalent for +1.22
How can I add a 2nd serial integer key column to a table? (postgres... 0.00
SQL constraint to have one unique value in two columns -0.01
Lots of small tree structures in SQL or NoSQL Databases -0.06
storing sessions temporarily +0.04
sync two tables from two different PostgreSQL databases +0.50
SQL: Selecting Where Latest Sub Child -0.61
Problem Storing Latitude and Longitude values in MySQL database -1.43
List of aggregate functions -0.28
Using a table purely for its function as an index to facilitate sea... -0.01
how to select lines in Mysql while a condition lasts +1.99
SQL: What's the state of ID x on date y (is there a more efficient... 0.00
Is this a safe way to convert MySQL tables from latin1 to utf-8? -0.26
Using UNION in django ORM syntax between different classes in the s... -0.27
Postgresql (Rails 3) merge rows on column (same table) 0.00
Fastest way to diff datasets and update/insert lots of rows into la... -0.09
Do I need to have a multicolumn index? +2.23
My Sql AND Relation for multiple rows -0.87
Check user Group Level via session or database? -0.27
WordPress search. Show only the first paragraph which has the searc... 0.00
PHP Class Namespaces vs Prefixes +1.05
Convert all records in postgres to have first letter uppercase 0.00
MySql Select query 0.00
Why does the following Postgres SQL query take so long? +1.68
merge DATE-rows if episodes are in direct succession or overlapping +0.04
Maintaining Data about a Database -0.00
Lightweight and secure way to prevent XSS -1.12
postgresql: parameterize aggregation type? 0.00
Simulate row number using numbers table +2.50
Is it unsecure to use $_GET to update the data from database? +1.70
Calculating nearest GeoLocation out of a dataset +0.50
MySQL special characters problems -0.12
REGEX to mask all characters except the first and last character +0.52
Reducing execution time for the following query -0.04
Validating items in CSV with regex +1.15
One regex for tag with multiple parameters and replacement 0.00
Should I store an array or individual items in Memcache? -0.50
Unexpected SQL results: string vs. direct SQL -1.87