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String Functions

CONCAT

CONCAT(string1, string2...)
Description
Concatenate one or more strings into a single string.
Example
CONCAT("Acho", "_", "Studio")
Result: Acho_Studio

ASCII

ASCII(string)
Description
Return the ASCII code value of the first character in a string.
Example
ASCII('a')
Result: 97
ASCII('acho')
Result: 97

ENDS_WITH

ENDS_WITH(string, substring)
Description
Return True if the string ends with the substring.
Example
ENDS_WITH("Acho", "o")
Result: True
ENDS_WITH("Apple", "o")
Result: False

INITCAP

INITCAP(string, [delimiters])
Description
Make the first letter of each word uppercase and the rest of the letters lowercase. Words are delimited by white space or other characters that you can specify in delimiters.
Example
INITCAP("acho studio")
Result: "Acho Studio"
INITCAP("ACHO_STUDIO", "_")
Result: "Acho_Studio"

INSTR

INSTR(string, subsstring, [position], [occurence])
Description
Return the position of the first substring in the string. 0 is returned when no match is found. Position determines where the search starts in a string. Occurrence refers to extract the i-th occurrence (ex: 2 means second occurrence).
Example
INSTR("Acho Studio", "o"),
Result: 4 (the position of the first "o")
INSTR("Acho Studio", "o", 6),
Result: 11 (the position of the first "o" from the sixth character)
INSTR("Acho Studio", "o", 1, 2)
Result: 2 (the position of the second "o" from the first character)

LEFT

LEFT(string, num_chars)
Description
Return the specified number of characters from the start of the given string.
Example
LEFT("Acho", 2)
Result: "Ac"

LENGTH

LENGTH(string)
Description
Return the length of a string in characters or bytes.
Example
LENGTH('acho')
Result: 4

LOWER

LOWER(string)
Description
Convert a text string to all lowercase letters.
Example
LOWER("ACHO")
Result: "acho"

LTRIM

LTRIM(string, [substring])
Description
Remove all leading spaces. If you want to remove strings other than spaces, you can optionally specify a substring.
Example
TRIM(" Acho ")
Result: "Acho "
TRIM("###Acho#", "#")
Result: "Acho#"

REGEXP_CONTAINS

REGEXP_CONTAINS(string, regexp)
Description
Return True if a string is a partial match for the regular expression pattern. To see supported regular expression, visit here.
Example
REGEXP_CONTAINS("[email protected]", r"@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+")
Result: True
REGEXP_CONTAINS("acho.io", r"@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+")
Result: False

REGEXP_EXTRACT

REGEXP_EXTRACT(string, regexp, position, occurence)
Description
Extracts the substring of the given string that matches the regular expression pattern. Returns NULL if there is no match. To see supported regular expression, visit here. Position determines where the search starts in a string. Occurrence refers to extract i-th occurrence (ex: 2 means second occurrence).
Example
REGEXP_EXTRACT("[email protected]", r"^[a-zA-Z0-9_.+-]+")
Result: "contact"

REPLACE

REPLACE(original_string, from_value, to_value)
Description
Replace all occurrences of from_value with to_value in original_string. If the from_value is not found, the string is unchanged.
Example
REPLACE("apple pie", "pie", "cobbler")
Result: "apple cobbler"
RIGHT(string, num_chars)
Description
Return the specified number of characters from the end of the given string.
Example
RIGHT("Acho", 2)
Result: "ho"

RTRIM

RTRIM(string, [substring])
Description
Remove all trailing spaces. If you want to remove strings other than spaces, you can optionally specify a substring.
Example
TRIM(" Acho ")
Result: " Acho"
TRIM("###Acho#", "#")
Result: "###Acho"

STARTS_WITH

STARTS_WITH(string, substring)
Description
Return True if the string ends with the substring.
Example
ENDS_WITH("Acho", "A")
Result: True
ENDS_WITH("Acho", "E")
Result: False

STRPOS

STRPOS(string, substring)
Description
Return the position of the substring within a specified string. If the substring occurs in several positions, it will only return the first occurrence.
Example
STRPOS('Acho Studio', 'o')
Result: 4

SUBSTR

SUBSTR(string, position, [length])
Description
Extract a substring from the given string, which starts at the position. The position refers to the position of a character in the given string. You can optionally specify the length to decide the number of characters that you want to extract.
Example
SUBSTR("Acho Studio", 3)
Return: "ho Studio"
SUBSTR("Acho Studio", 4, 5)
Return: "o Stu"

TRIM

TRIM(string, [substring])
Description
Remove all leading and trailing spaces. If you want to remove strings other than spaces, you can optionally specify a substring.
Example
TRIM(" Acho ")
Result: "Acho"
TRIM("###Acho#", "#")
Result: "Acho"

UPPER

UPPER(string)
Description
Convert a text string to all uppercase letters.
Example
UPPER("Acho")
Result: "ACHO"