[英]How to use like clause in MySQL 5.0 Statement
I have a problem using 'like' clause in MySQL 5.0 I have written a stored procedure in MySQL 5.0 and calling the Stored Procedure from my Java Program the stored procedure below in the select statement i want to take the value of parameter departmentname for like clause please Help with this 我在MySQL 5.0中使用'like'子句时遇到问题我在MySQL 5.0中编写了一个存储过程,并从我的Java程序中调用了存储过程,在select语句中使用了下面的存储过程,我想为like子句获取参数Departmentname的值请帮助这个
DROP PROCEDURE IF EXISTS upSelTests;
DELIMITER //
CREATE PROCEDURE upSelTests
(
IN departmentname varchar(50),
IN testDateFrom varchar(10),
IN testDateTo varchar(10)
)
BEGIN
declare testDateFrom1 varchar(30);
select PatientID,LabNo,arriveddate,RecieptNo,patientname,referredby,ID from
tblAcceptTest where STR_TO_DATE(arriveddate, '%d/%m/%Y')>=STR_TO_DATE(testDateFrom,
'%d/%m/%Y') and STR_TO_DATE(arriveddate, '%d/%m/%Y') <= STR_TO_DATE(testDateTo,
'%d/%m/%Y') and Status = 0 and DeptName like '%departmentname%';
END //
DELIMITER ;
When you enclose departmentname
in quotes, it becomes a character literal, and ceases to be a variable. 当您将
departmentname
括在引号中时,它将成为字符文字,并且不再是变量。 Its value is ignored, and the literal '%departmentname%'
is used instead. 其值将被忽略,而改用文字
'%departmentname%'
。
The simplest solution is to use CONCAT
to add '%'
as a prefix and a suffix, like this: 最简单的解决方案是使用
CONCAT
添加'%'
作为前缀和后缀,如下所示:
and DeptName LIKE CONCAT( '%', departmentname, '%')
If, for example, departmentname
is set to police
, the result becomes 例如,如果
departmentname
名称设置为police
,结果将变为
and DeptName LIKE '%police%'
Format: 格式:
SELECT field1, field2,...fieldN table_name1, table_name2...
WHERE field1 LIKE condition1 [AND [OR]] filed2 = 'somevalue'
Eg: 例如:
SELECT * from tutorials_tbl
WHERE tutorial_author LIKE '%jay';
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