Slice / String Layer

Extract a substring by position and length. Similar to Python's str[start:start+length] or Rust's string slicing. Works with UTF-8 characters, not bytes. Useful for:

Extracting specific portions of formatted text
Getting substrings from fixed-width fields
Processing structured string data
Working with positional data formats

Table

Select

column

The string column to slice. Each value will be sliced according to the specified position and length.

Offset

i64

Starting position (Offset) for the slice. Examples:

0: start from beginning
3: start at fourth character
-5: start at fifth character from end

Handles UTF-8 character positions correctly

Length

u64

Number of characters (Length) to include in slice. Examples:

0: take all characters to end
5: take five characters

Returns fewer characters if string is too short

Name for the new column. If not provided, the system generates a unique name. If AsColumn matches an existing column, the existing column is replaced. The name should follow valid column naming conventions.