如何從 customer_name 欄位取得名字

Question

select substring(custmer_name, 1, instr(custmer_name, ' ')) as first_name from sales.customers;

這個解決方案給了我答案，但它不適用於姓氏

Answer 1

使用SUBSTRING_INDEX()需要3個參數：

1. 列名稱
2. Delimiter
3. 出現次數

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;

Answer 2

請測試一下：我使用locate函數來定義「 」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;

結果集：

#