忽略大小写 sql 查询

Question

I am trying to basically ignore the case sensitivity for my db2 sql select * query, so that I can populate the products to my catalogue page. Ex. If I type in my search bar 'squeege', I want the item 'Squeege' to populate, even if there is a difference in Upper/lower case. What is the best way to do this, based on the code I have below?

var searchProduct = "select * from LISTOFPRODUCTS where ITEM LIKE  '%" + searchValue + "%'" 

Thanks in advance for the help :)

Answer 1

I think this could work:

var searchProduct = "select * from LISTOFPRODUCTS where UPPER(ITEM) LIKE  UPPER('%" + searchValue + "%'")

Also the same with LOWER()

Note that the trick is parse both values to UPPER() or LOWER() to match them.

Answer 2

You can use the function LOWER() . For example:

var searchProduct = "select * from LISTOFPRODUCTS where LOWER(ITEM) LIKE  '%" + searchValue + "%'" 

Answer 3

您还可以考虑使用REGEXP_LIKE具有不区分大小写的选项i