像变量一样搜索数据，但我想查找像 %?% 这样的数据，但这当然行不通

Question

我正在尝试搜索 LIKE 变量的数据，但我想查找 %?% 之类的数据，但这当然行不通，我可以使用 LIKE ?但我还需要找到所有值，例如 D 并提出 Dog

       search=self.text
    with sqlite3.connect('Data.db') as db:
        user_find = db.cursor()
        user_find.execute(
            'select * from "Animal Data" where Animal_ID LIKE ? or Animal_Name LIKE ? or Animal_Type LIKE ? or Animal_Gender LIKE ? or Animal_breed LIKE ? or Animal_breed LIKE ? or Animal_breed LIKE? or Animal_colour LIKE ? or Address LIKE ?'
            ,(search,search,search,search,search,search,search,search,search,))
        data = user_find.fetchall()
        print(data)

Answer 1

您应该将要出现在 LIKE 语句中的整个表达式绑定到 ? 占位符。也就是说，如果您想搜索任何包含字母 D 的字段，您可以将字符串 %D% 绑定到您的语句。

search = '%' + search + '%'
user_find = db.cursor()
user_find.execute(
    'select * from "Animal Data" where Animal_ID LIKE ? or Animal_Name LIKE ? or Animal_Type LIKE ? or Animal_Gender LIKE ? or Animal_breed LIKE ? or Animal_breed LIKE ? or Animal_breed LIKE? or Animal_colour LIKE ? or Address LIKE ?',
    (search,search,search,search,search,search,search,search,search,)
)
data = user_find.fetchall()
print(data)

像变量一样搜索数据，但我想查找像 %?% 这样的数据，但这当然行不通

search for data LIKE a variable but i want to find data like %?% but of course this doesn't work

python

sql

sqlite

sql-like