zen cart 订单搜索功能,使用中文关键字搜索,出现 Illegal mix of collations for o
zen cart版本为1.3.9
进入zen cart后台,客户管理-》订单管理,使用订单搜索功能,关键字为中文:李超,搜索时出现如下错误:
1271 Illegal mix of collations for operation 'like'
in:
[select count(*) as total from (zc_orders_status s, zc_orders o ) left join zc_orders_total ot on (o.orders_id = ot.orders_id and ot.class = 'ot_total') where (o.orders_status = s.orders_status_id and s.language_id = '2') and (o.customers_city like '%李超%' or o.customers_postcode like '%李超%' or o.date_purchased like '%李超%' or o.billing_name like '%李超%' or o.billing_company like '%李超%' or o.billing_street_address like '%李超%' or o.delivery_city like '%李超%' or o.delivery_postcode like '%李超%' or o.delivery_name like '%李超%' or o.delivery_company like '%李超%' or o.delivery_street_address like '%李超%' or o.billing_city like '%李超%' or o.billing_postcode like '%李超%' or o.customers_email_address like '%李超%' or o.customers_name like '%李超%' or o.customers_company like '%李超%' or o.customers_street_address like '%李超%' or o.customers_telephone like '%李超%' or o.ip_address like '%李超%')]
从SQL语句方面分析这个问题,发现是 o.date_purchased like '%李超%' 导致整个SQL语句执行报错
在 MySQL 5.5 以上, 若字段 Type 是 time,date,datetime
在 select 時若使用 like '%中文%' 会出現 Illegal mix of collations for operation 'like'
在写程序时要对每个字段进行搜索,在执行时可能就会出现时间字段 like '%中文%' 这种语法,
这在比较久的版本MySQL是不会出现错误的。但是升级到MySQL 5.5以上,必需改成like binary '%中文%' 即可避免出现错误

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