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FIRST

Gets the first input value to arrive for each group.

Syntax

FIRST(X)

Arguments

X

Type: any
The value to return.

Returns

Type: same as input
Returns first value of X that arrived for each group.

Examples

Transformation job example

SQL

CREATE JOB function_operator_example
ADD_MISSING_COLUMNS = true
AS INSERT INTO default_glue_catalog.upsolver_samples.orders_transformed_data MAP_COLUMNS_BY_NAME
SELECT
LOWER(ordertype) as ordertype,
FIRST(customer.email) as first_customer
FROM default_glue_catalog.upsolver_samples.orders_raw_data
WHERE $commit_time BETWEEN run_start_time() - PARSE_DURATION('1d') AND run_end_time()
GROUP BY 1
LIMIT 2;

Query result

ordertype
first_customer
pickup
shipping