Table.FirstN

Syntax

Table.FirstN(table as table, countOrCondition as any) as table

About

Returns the first row(s) of the table table, depending on the value of countOrCondition:

• If countOrCondition is a number, that many rows (starting at the top) will be returned.
• If countOrCondition is a condition, the rows that meet the condition will be returned until a row does not meet the condition.

Example 1

Find the first two rows of the table.

Usage

Power Query M

Table.FirstN(
    Table.FromRecords({
        [CustomerID = 1, Name = "Bob", Phone = "123-4567"],
        [CustomerID = 2, Name = "Jim", Phone = "987-6543"],
        [CustomerID = 3, Name = "Paul", Phone = "543-7890"]
    }),
    2
)

Output

Power Query M

Table.FromRecords({
    [CustomerID = 1, Name = "Bob", Phone = "123-4567"],
    [CustomerID = 2, Name = "Jim", Phone = "987-6543"]
})

Example 2

Find the first rows where [a] > 0 in the table.

Usage

Power Query M

Table.FirstN(
    Table.FromRecords({
        [a = 1, b = 2],
        [a = 3, b = 4],
        [a = -5, b = -6]
    }),
    each [a] > 0
)

Output

Power Query M

Table.FromRecords({
    [a = 1, b = 2],
    [a = 3, b = 4]
})