SQL Commands Cheat Sheet – How to Learn SQL in 10 Minutes

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Thu Nov 25 2021 13:02:43 GMT+0000 (UTC)

Saved by @moonbells #sql

ASCII -- Returns the equivalent ASCII value for a specific character.

CHAR_LENGTH -- Returns the character length of a string.

CHARACTER_LENGTH -- Same as CHAR_LENGTH.

CONCAT -- Adds expressions together, with a minimum of 2.

CONCAT_WS -- Adds expressions together, but with a separator between each value.

FIELD -- Returns an index value relative to the position of a value within a list of values.

FIND IN SET -- Returns the position of a string in a list of strings.

FORMAT -- When passed a number, returns that number formatted to include commas (eg 3,400,000).

INSERT -- Allows you to insert one string into another at a certain point, for a certain number of characters.

INSTR -- Returns the position of the first time one string appears within another.

LCASE -- Converts a string to lowercase.

LEFT -- Starting from the left, extracts the given number of characters from a string and returns them as another.

LENGTH -- Returns the length of a string, but in bytes.

LOCATE -- Returns the first occurrence of one string within another,

LOWER -- Same as LCASE.

LPAD -- Left pads one string with another, to a specific length.

LTRIM -- Removes any leading spaces from the given string.

MID -- Extracts one string from another, starting from any position.

POSITION -- Returns the position of the first time one substring appears within another.

REPEAT -- Allows you to repeat a string

REPLACE -- Allows you to replace any instances of a substring within a string, with a new substring.

REVERSE	-- Reverses the string.

RIGHT -- Starting from the right, extracts the given number of characters from a string and returns them as another.

RPAD -- Right pads one string with another, to a specific length.

RTRIM -- Removes any trailing spaces from the given string.

SPACE -- Returns a string full of spaces equal to the amount you pass it.

STRCMP -- Compares 2 strings for differences

SUBSTR -- Extracts one substring from another, starting from any position.

SUBSTRING -- Same as SUBSTR

SUBSTRING_INDEX	-- Returns a substring from a string before the passed substring is found the number of times equals to the passed number.

TRIM --	Removes trailing and leading spaces from the given string. Same as if you were to run LTRIM and RTRIM together.

UCASE -- Converts a string to uppercase.

UPPER -- Same as UCASE.
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