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Select n amount of random rows where n is proportionate to each value's % of total population

sql sql-server random

How can I optimize SQLite ORDER BY rowid?

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Backup and restore of Hsqldb database in java code

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Is there any formal difference at all between PostgreSQL functions with OUT parameters and with TABLE results?

Joining arrays within group by clause

Using case in mysql ORDER BY

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SQL How to Count Number of Specific Values in a Row

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Without JOINs, what is the right way to handle data in document databases?

Are PL/SQL stored procedures transactions?

HIVE SQL Subquery in WHERE Clause

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Find the time difference between two consecutive rows in the same table in sql

SQL VARCHAR vs NVARCHAR in CAST performance

T-SQL create table and index in one query

JDBC returns an empty ResultSet (rs.isBeforeFirst() == true) although the table isn't empty

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Select by increasing order SQL

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Postgresql ORDER BY - choosing right index

postgreSQL hstore if contains value

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Average and case in SQL Server 2012

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How should I handle units of measure in an ingredient database?

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Building a distributed bittorrent-SQL database