题解 | #判断其是否有过购买记录#
判断其是否有过购买记录
https://www.nowcoder.com/practice/5cddad8995974b0c915ab89961428ee0
SELECT customer_id, IF (latest_place_order_date, 1, 0) AS if_placed_order FROM customers_info
判断其是否有过购买记录
https://www.nowcoder.com/practice/5cddad8995974b0c915ab89961428ee0
SELECT customer_id, IF (latest_place_order_date, 1, 0) AS if_placed_order FROM customers_info
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