merge for filters

Merge the input with a record or table, overwriting values in matching columns.

Signature

> merge (value)

Parameters

• value: the new value to merge with

Notes

You may provide a column structure to merge

When merging tables, row 0 of the input table is overwritten with values from row 0 of the provided table, then repeating this process with row 1, and so on.

Examples

Add an 'index' column to the input table

> [a b c] | wrap name | merge ( [1 2 3] | wrap index )
╭───┬──────╮
│ # │ name │
├───┼──────┤
│ 1 │ a    │
│ 2 │ b    │
│ 3 │ c    │
╰───┴──────╯

Merge two records

> {a: 1, b: 2} | merge {c: 3}
╭───┬───╮
│ a │ 1 │
│ b │ 2 │
│ c │ 3 │
╰───┴───╯

Merge two tables, overwriting overlapping columns

> [{columnA: A0 columnB: B0}] | merge [{columnA: 'A0*'}]
╭───┬─────────┬─────────╮
│ # │ columnA │ columnB │
├───┼─────────┼─────────┤
│ 0 │ A0*     │ B0      │
╰───┴─────────┴─────────╯