Question

您好我写了这个查询，但它给了我不正确的语法错误。我想尝试更新BizValue，如果BUSINESS_UNIT =＆＃39;价值＆＃39;然后将BizValue更新为1 ...

请帮忙

UPDATE products.products 
SET BizValue = CASE BizValue 
        WHEN BUSINESS_UNIT='Optoelectronics' THEN 1
        WHEN BUSINESS_UNIT='Hardware' THEN 2 
        ELSE null
      END

Answer 1

从BizValue部分取出CASE：

UPDATE products.products 
SET BizValue = CASE 
        WHEN BUSINESS_UNIT='Optoelectronics' THEN 1
        WHEN BUSINESS_UNIT='Hardware' THEN 2 
        ELSE null
      END

或

UPDATE products.products 
SET BizValue = CASE BUSINESS_UNIT
        WHEN 'Optoelectronics' THEN 1
        WHEN 'Hardware' THEN 2 
        ELSE null
      END

SQL Update如果Column =然后更新

1 个答案: