Analytics SAQL Developer Guide

Overview
Quick Start
Examples
SAQL Reference
SAQL Basic Elements
SAQL Operators
SAQL Statements
SAQL Functions
Aggregate Functions
Date Functions
Time Zone Date Functions
Work with Custom Fiscal Year Data
String Functions
ascii()
chr()
ends_with()
index_of()
len()
lower()
ltrim()
mv_to_string()
number_to_string
replace()
rtrim()
starts_with()
string_to_number
substr()
trim()
upper()
Math Functions
Windowing Functions
coalesce
Query Performance
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substr()

Returns a substring that starts at the specified position. You can also specify the length of the substring to return.

Syntax

substr(string,position[, length])

Usage

substr returns the characters in string, starting at position position. If you specify length, this function returns length number of characters. If any of the parameters are null, then the function returns null. length is optional.

The first character in string is at position 1. If position is negative then the position is relative to the end of the string. So a position of -1 denotes the last character.

If length is negative, then the function returns null. If position > len (string) or position < -len(string) or position = 0, then the empty string is returned.

Example

Example

Suppose that you want to display the current time, but not the current date. Use substr() to return the last 11 characters from date_to_string() .