base.reduce_stack

Concatenate a collection of tables row-wise. Equivalent to R's rbind, pandas' concat(axis=0), or SQL UNION ALL. All tables must share a compatible schema; in non-strict mode, mismatched columns are unioned and missing values filled with null.

Kind: reduce
Network: no

Inputs🔗

Name	Type	Description
`tables`	collection of file (Parquet)	Tables to stack.
`strict`	boolean	When `true`, require identical schemas across all tables. When `false` (default), diagonally-concatenate and fill missing columns with null.

Outputs🔗

Name	Type	Description
`result`	file (Parquet)	Stacked table.

Example🔗

- id: 01890000-0000-0000-0000-00000000000b
  name: base.reduce_stack
  inputs:
    - 01890000-0000-0000-0000-000000000007