Table.ExpandTableColumn

Syntax

Table.ExpandTableColumn(table as table, column as text, columnNames as list, optional newColumnNames as nullable list) as table

About

Expands tables in table[column] into multiple rows and columns. columnNames is used to select the columns to expand from the inner table. Specify newColumnNames to avoid conflicts between existing columns and new columns.

Example 1

Expand table columns in [a] in the table ({[t = {[a=1, b=2, c=3], [a=2,b=4,c=6]}, b = 2]}) into 3 columns [t.a], [t.b] and [t.c].

Table.ExpandTableColumn(
    Table.FromRecords({
        [
            t = Table.FromRecords({
                [a = 1, b = 2, c = 3],
                [a = 2, b = 4, c = 6]
            }),
            b = 2
        ]
    }),
    "t",
    {"a", "b", "c"},
    {"t.a", "t.b", "t.c"}
)
t.a t.b t.c b
1 2 3 2
2 4 6 2