select substring(custmer_name, 1, instr(custmer_name, ' ')) as first_name from sales.customers;
Diese L?sung hat mir die Antwort gegeben, funktioniert aber nicht für den Nachnamen
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使用SUBSTRING_INDEX()需要3個參數(shù)：
您可以在此找到更多說明文章
查詢
SELECT SUBSTRING_INDEX(customer_name,' ', 1) as first_name, SUBSTRING_INDEX(customer_name,' ', -1) as last_name FROM customer;
請測試一下：我使用locate函數(shù)來定義“ ”的位置。
SELECT
LEFT(customer_name, LOCATE(' ',customer_name)-1) as first_name,
RIGHT(customer_name, LENGTH(customer_name)-LOCATE(' ',customer_name)) as last_name
FROM customer;
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