如何在VSCODE上调试SQLite

我试图使用SQLite对Vscode上的查询（见下文）求值。 它返回一个错误，这不是很有帮助（见下文）。我想知道我是否可以进行更深入的调试？老实说，我不知道如何开始调试。 许多tk

代码：

WITH processed_users AS (
    SELECT
        LEFT (u.phone_country, 2) AS short_phone_country,
        u.id
    FROM
        users u
)
SELECT
    t.user_id,
    t.merchant_country,
    Sum (
        t.amount / fx.rate / Power (10, cd.exponent)
    ) AS amount
FROM
    transactions t
    JOIN fx_rates fx ON (
        fx.ccy = t.currency
        AND fx.base_ccy = 'EUR'
    )
    JOIN currency_details cd ON cd.currency = t.currency
    JOIN processed_users pu ON pu.id = t.user_id
WHERE
    t.source = 'GAIA'
    AND pu.short_phone_country = t.merchant_country
GROUP BY
    t.user_id,
    t.merchant_country
ORDER BY
    amount DESC;

[5:21:43 PM][vscode-sqlite][ERROR] near "(": syntax error

错误：

WITH processed_users AS (
    SELECT
        LEFT (u.phone_country, 2) AS short_phone_country,
        u.id
    FROM
        users u
)
SELECT
    t.user_id,
    t.merchant_country,
    Sum (
        t.amount / fx.rate / Power (10, cd.exponent)
    ) AS amount
FROM
    transactions t
    JOIN fx_rates fx ON (
        fx.ccy = t.currency
        AND fx.base_ccy = 'EUR'
    )
    JOIN currency_details cd ON cd.currency = t.currency
    JOIN processed_users pu ON pu.id = t.user_id
WHERE
    t.source = 'GAIA'
    AND pu.short_phone_country = t.merchant_country
GROUP BY
    t.user_id,
    t.merchant_country
ORDER BY
    amount DESC;

[5:21:43 PM][vscode-sqlite][ERROR] near "(": syntax error

SQLite中没有LEFT（）函数。使用SUBSTR（）。此外，没有Power（）函数。