Substring returns characters from a string, starting from the specified position, or index. Index values start with the number 0. Examples: substring('This_is_a ...

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What Is Alcohol Use Disorder? Alcohol use disorder (AUD) used to be called alcoholism. It's a medical condition that affects a lot of people. If you have it, you regularly drink heavy amounts of ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Dr. Melody Bell is a personal finance expert ...