ZFill / String Layer

Pad strings with leading zeros to reach specified length. Similar to Python's str.zfill() or Rust's format!("{:0>width}"). Particularly useful for:

Formatting numeric strings (ID numbers)
Creating fixed-width codes
Standardizing sequence numbers
Preparing data for legacy systems

Table

Select

column

The string column to pad. Common scenarios:

Numeric strings (42 -> 00042)
Reference numbers (A1 -> 000A1)
Sequential IDs (123 -> 000123)

Length

u32

Target width (Length) for padded strings. Examples with length=5:

42 -> 00042
12345 -> 12345
ABC -> 00ABC

Strings longer than length remain unchanged

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.