DBMS

In MySQL, the LPAD() function allows you to pad the left part of a string with one or more characters.

The way it works is, you specify the string to pad, the length of the padding, as well as the string of characters to use for the padding.

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In MySQL, the LOCATE() function returns the position of a substring within a string. More specifically, it returns the position of the first occurrence within the string, or the first occurrence after a given starting point.

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In MySQL, the LOAD_FILE() function reads a file and returns its contents as a string.

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In MySQL, the RIGHT() function returns the rightmost characters from a string. The number of characters returned is determined by the second argument.

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In MySQL, the LEFT() function returns the leftmost characters from a string. The number of characters returned is determined by the second argument.

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In MySQL, the UCASE() function is a synonym for UPPER(). In other words, you can use either of these functions to do the same thing.

Specifically, both functions convert lowercase characters to uppercase (and return the result), according to the current character set mapping (the default mapping is utf8mb4).

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In MySQL, the UPPER() function converts lowercase characters to uppercase, according to the current character set mapping (the default mapping is utf8mb4).

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In MySQL, the LCASE() function is a synonym for LOWER(). In other words, you can use either of these functions to do the same thing.

Specifically, both functions convert uppercase characters to lowercase, according to the current character set mapping (the default mapping is utf8mb4).

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In MySQL, the LOWER() function converts uppercase characters to lowercase, according to the current character set mapping (the default mapping is utf8mb4).

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The INSTR() function returns the position of the first occurrence of a substring within a string. Basically, it does the same thing that the two-argument syntax of the LOCATE() function does (except that the order of the arguments is reversed).

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