如何檢查Mysql行的文本？

Question

我想檢查我的表中的一行是否包含特定的字符串。 如果是這樣，我想獲得具有特定字符串的用戶。 我的表看起來像這樣： The picture

我想檢查字符串「彼得」，在地址列/行。 如何掃描並找到它？ 然後，如何檢查擁有該字符串的用戶的ID？ 我感謝任何幫助，我可以得到。

Answer 1

基本信息od mysql。通配符%告訴數據庫引擎我們期望'彼得'字符串前後有一些字符。

SELECT * FROM tablename WHERE Address LIKE '%Peter%' 

匹配：

"Peter's address" 
"It is Peter's address" 
"Address of Peter" 

Answer 2

編寫SQL命令來掃描data.Command您的問題看起來像::

select * from Mytable where address="peter"; 

Answer 3

一些替代喜歡 給出

MariaDB [BANK]> select * from customer; 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| id | version | title | FirstName | Middlenames | LastName | Gender | Dob  | Dod | Warning_flag | Worth | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| 1 | 1.00 | Mr | fname1 | NULL  | lname1 | m  | 1990-01-01 | NULL | NULL   | NULL | 
| 2 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
| 3 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
3 rows in set (0.00 sec) 

MariaDB [BANK]> SELECT * FROM CUSTOMER 
    -> WHERE INSTR(LASTNAME,'a') > 0; 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| id | version | title | FirstName | Middlenames | LastName | Gender | Dob  | Dod | Warning_flag | Worth | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| 1 | 1.00 | Mr | fname1 | NULL  | lname1 | m  | 1990-01-01 | NULL | NULL   | NULL | 
| 2 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
| 3 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
3 rows in set (0.00 sec) 

MariaDB [BANK]> 
MariaDB [BANK]> SELECT * 
    -> from customer 
    -> WHERE position('a' in lastname) > 0; 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| id | version | title | FirstName | Middlenames | LastName | Gender | Dob  | Dod | Warning_flag | Worth | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| 1 | 1.00 | Mr | fname1 | NULL  | lname1 | m  | 1990-01-01 | NULL | NULL   | NULL | 
| 2 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
| 3 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
3 rows in set (0.00 sec) 

MariaDB [BANK]> 
MariaDB [BANK]> SELECT * 
    -> from customer 
    -> WHERE locate('a',lastname) > 0; 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| id | version | title | FirstName | Middlenames | LastName | Gender | Dob  | Dod | Warning_flag | Worth | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
| 1 | 1.00 | Mr | fname1 | NULL  | lname1 | m  | 1990-01-01 | NULL | NULL   | NULL | 
| 2 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
| 3 | 1.00 | Mrs | fname1 | NULL  | lname1 | f  | 1990-01-01 | NULL | NULL   | NULL | 
+------+---------+-------+-----------+-------------+----------+--------+------------+------+--------------+-------+ 
3 rows in set (0.00 sec)