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Index - script and chart function

Index() searches a string to find the starting position of the nth occurrence of a provided substring. An optional third argument provides the value of n, which is 1 if omitted. A negative value searches from the end of the string. The positions in the string are numbered from 1 and up.


Index(text, substring[, count])

Return data type: integer


Index arguments
Argument Description
text The original string.
substring A string of characters to search for in text.
count Defines which occurrence of substring to search for. For example, a value of 2 searches for the second occurrence.

Examples and results:  

Examples and results
Example Result
Index( 'abcdefg', 'cd' ) Returns 3
Index( 'abcdabcd', 'b', 2) Returns 6 (the second occurrence of 'b')
Index( 'abcdabcd', 'b',-2) Returns 2 (the second occurrence of 'b' starting from the end)
Left( Date, Index( Date,'-') -1 ) where Date =  1997-07-14 Returns 1997
Mid( Date, Index( Date, '-', 2 ) -2, 2 ) where Date =  1997-07-14 Returns 07

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