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PostgreSQL length function.

PostgreSQL length function returns the length of the specified string, expressed in the number of characters….

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SQL*Loader: upload to Oracle database and conversion.

In this article, we will talk about how to upload information to an Oracle database, namely, we will consider a utility to import data into an Oracle …

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PostgreSQL CEILING function.

The PostgreSQL CEILING function returns the smallest integer value, which is greater than or equal to a number….

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PostgreSQL CEIL function.

The PostgreSQL CEIL function returns the smallest integer value, which is greater than or equal to a number….

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PostgreSQL avg function.

The PostgreSQL avg function returns the average value of the expression….

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