Function substring() extracts a substring with specified length from the specified start index of a string and return this substring.

Arguments：

• String <string>
• Start Index <number>
• Length <number>

Returns：

• String <string>

Common Usage

Example: Direct calculate

uncollect ["graph", "database"] as a
uncollect [2, 3] as b
return substring(a, 1, b)

| substring(a, b) |
|-----------------|
| ra              |
| ata             |

Exalmple: Multiply and calculate

uncollect ["graph", "database"] as a
uncollect [2, 3] as b
with substring(a, 1, b) as c
return c

|  c  |
|-----|
| ra  |
| rap |
| at  |
| ata |