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PostgreSQL LTRIM function.

The PostgreSQL LTRIM function removes all specified characters on the left side of the line….

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PostgreSQL lower function.

The PostgreSQL lower function converts all characters of a specified string into a lower case….

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PostgreSQL character_length function.

The character_length function in PostgreSQL returns the length of the specified string….

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PostgreSQL operator ||.

PostgreSQL operator || allows combining 2 or more lines together….

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Oracle: rights and access to the database.

Immediately after the creation of users in the database, the need to manage their access to various data objects arises. For example, an employee of t…

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