あるテーブルから別のテーブルに行を更新しようとしています

Question

UPDATE customer_service.batch_status.cust_nm 
SET batch_status.cust_nm 
SELECT customer_service.batch_detail.cust_nm 
FROM customer_service.batch_detail 
LEFT JOIN customer_service.batch_status 
    ON customer_service.batch_detail.cust_nm = customer_service.batch_status.cust_nm; 

Answer 1

構文はオフです。

代わりに：

UPDATE customer_service.batch_status.cust_nm 
FROM customer_service.batch_detail csbd 
SET cust_nm = csbd.cust_nm 
WHERE csbd.cust_nm = customer_service.batch_status.cust_nm;