php - 包含 AND 子字符串条件的 WHERE 子句

Question

在我将此条件添加到 WHERE 子句之前，下面显示的 php 查询工作正常(添加后查询结果为空白):

AND SUBSTR(company_id,1)='1' 

基本上，我只想包括 company_id 中最后一位数字为“1”的公司。我该怎么做？

$data = mysqli_query($mysqli,"SELECT table1.company_abbrev, table2.company_name FROM table1, table2 WHERE table1.company_id=banks.company_id AND SUBSTR(company_id,1)='1' ORDER BY table2.company_name ");

Answer 1

试试这个

SUBSTR(company_id,-1)='1' 

 SUBSTRING(), the position of the first character in the string from which the 
 substring  is to be extracted is reckoned as 1

有关更多详细信息，请参阅 dev.mysql.com