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SQL in just 20 minutes.

    Every self-respecting web developer should know SQL.

    Although it has existed since the 70s of last century, it is still very widely used, and wit…

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    Oracle NEXT_DAY function.

    Oracle/PLSQL NEXT_DAY function returns the first day of the week that is larger than date….

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    Oracle LAST_DAY function.

    Oracle/PLSQL LAST_DAY function returns the last day of the month based on the date value….

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    Oracle SYSDATE function.

    Oracle/PLSQL SYSDATE function returns the current system date and time on your local database….

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    Oracle TRUNC function (FOR DATE).

    The Oracle/PLSQL TRUNC function returns a date truncated to a specific unit….

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