如何检查Mysql行的文本？

Question

我想检查我的表中的一行是否包含特定的字符串。 如果是这样，我想获得具有特定字符串的用户。 我的表看起来像这样： The picture

我想检查字符串“彼得”，在地址列/行。 如何扫描并找到它？ 然后，如何检查拥有该字符串的用户的ID？ 我感谢任何帮助，我可以得到。

Answer 1

基本信息od mysql。通配符%告诉数据库引擎我们期望'彼得'字符串前后有一些字符。

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

匹配：

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

Answer 2

编写SQL命令来扫描data.Command您的问题看起来像::

select * from Mytable where address="peter"; 

Answer 3

一些替代喜欢 给出

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)