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Oracle DECODE function

Oracle/PLSQL DECODE function has functionality of IF-THEN-ELSE operator….

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Assigning Permissions and Roles in SQL Server

SQL Server applies role-based security rights delimitation. A role is a certain set of rights that can be assigned to a certain user or group of…

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The operation of the PostgreSQL query optimizer

PostgreSQL uses a cost-based query optimizer, just like any high-end relational database, to try to make your SQL queries as effective and quick to ex…

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Map Publication Using Geoserver and PostGIS

PostGIS analysis is only one aspect of the whole picture. How about making our datasets available as maps that different clients can use and profit fr…

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PostgreSQL bulk loading massive amounts of data 

The quickest way to add a lot of data to a PostgreSQL database is through bulk loading. Large-scale imports can be facilitated in a variety of ways, a…

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