WITH roic_table AS (
SELECT
symbol,
report_date,
MAX(CASE WHEN item_name = 'ebit' THEN item_value END) AS ebit,
MAX(CASE WHEN item_name = 'tax_rate_for_calcs' THEN item_value END) AS tax_rate_for_calcs,
MAX(CASE WHEN item_name = 'invested_capital' THEN item_value END) AS invested_capital
FROM
'{url}'
WHERE
symbol = '{ticker}'
AND item_name IN ('ebit', 'tax_rate_for_calcs', 'net_income_common_stockholders', 'invested_capital')
AND report_date != 'TTM'
AND period_type = 'quarterly'
AND finance_type in ('income_statement', 'balance_sheet')
GROUP BY symbol, report_date
),
base_data AS (
SELECT
symbol,
report_date,
ebit,
tax_rate_for_calcs,
ebit * (1 - tax_rate_for_calcs) as nopat,
invested_capital,
YEAR(report_date::DATE) AS report_year,
QUARTER(report_date::DATE) AS report_quarter,
YEAR(report_date::DATE) * 4 + QUARTER(report_date::DATE) AS continuous_id
FROM
roic_table
),
base_data_rn AS (
SELECT
symbol,
report_date,
ebit,
tax_rate_for_calcs,
nopat,
invested_capital,
report_year,
report_quarter,
continuous_id,
ROW_NUMBER() OVER (ORDER BY continuous_id ASC) AS rn_asc
FROM
base_data
),
grouped_data AS (
SELECT
*,
continuous_id - rn_asc AS group_id
FROM
base_data_rn
),
base_data_window AS (
SELECT
symbol,
report_date,
ebit,
tax_rate_for_calcs,
nopat,
invested_capital,
ROW_NUMBER() OVER (ORDER BY report_date ASC) AS rn
FROM
grouped_data t1
JOIN (
SELECT
group_id
FROM
grouped_data
ORDER BY
continuous_id DESC
LIMIT 1
) t2
ON t1.group_id = t2.group_id
ORDER BY
continuous_id ASC
),
invested_capital_with_lag AS (
SELECT
symbol,
report_date,
ebit,
tax_rate_for_calcs,
nopat,
invested_capital as ending_invested_capital,
LAG(invested_capital, 1) OVER (PARTITION BY symbol ORDER BY report_date) AS beginning_invested_capital
FROM base_data_window
),
invested_capital_avg AS (
SELECT
symbol,
report_date,
ebit,
tax_rate_for_calcs,
nopat,
ending_invested_capital,
beginning_invested_capital,
(beginning_invested_capital + ending_invested_capital) / 2.0 AS avg_invested_capital
FROM invested_capital_with_lag
WHERE beginning_invested_capital IS NOT NULL
)
select symbol,
report_date,
ebit,
tax_rate_for_calcs,
nopat,
beginning_invested_capital,
ending_invested_capital,
avg_invested_capital,
round(nopat / avg_invested_capital, 4) AS roic
from invested_capital_avg order by report_date;
