sql语句学习

INSERT INTO tr_user_product_doctor (
user_id,
product_id,
doctor_id
) SELECT
user_id,
product_id,
‘doctorId‘
FROM
tr_product_user trpu
WHERE
trpu.user_id = ‘userId‘

说明：根据user_id 查询到相关的product_id，然后将其和后台传来的userId、doctorId传入tr_user_product_doctor 表中

sql语句学习

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