# name: benchmark/tpch/cte/auto_cte_materialization.benchmark
# description: Benchmark to check if automatic CTE materialization is working
# group: [cte]

name Automatic CTE materialization
group cte

require tpch

# create the CSV file
load
CALL dbgen(sf=1);

run
WITH my_cte AS (
    SELECT
        l_returnflag,
        l_linestatus,
        sum(l_quantity) AS sum_qty
    FROM
        lineitem
    GROUP BY
        l_returnflag,
        l_linestatus
)
SELECT
    (SELECT sum_qty FROM my_cte WHERE l_returnflag = 'A') +
    (SELECT sum_qty FROM my_cte WHERE l_returnflag = 'R');

result I
75453860.00