Email comparison in SQL

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Hello everyone, I am doing a little project using mysql to manage feeds from sites and show them to the registered users, style Google Reader, to backend I am using GO and DBMS MySQL, everything went smoothly until the moment I 'd write a query to compare email addresses, I introduced an email query, style something like this:

SELECT id FROM User WHERE Email = "tu@dominio.com"

described above query returns me null, a user exists in the table with this mail, but when I do the same query comparing other fields such as name, user puts me correctly, someone has idea that may be happening here ?, greetings and Thanks ...

Posted 12-Feb-15 5:54am

Cesar Bretana Gonzalez

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CHill60 12-Feb-15 12:07pm

If you run
SELECT @@GLOBAL.sql_mode;
SELECT @@SESSION.sql_mode;
is ANSI_QUOTES listed (i.e. enabled)?

2 solutions

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OriginalGriff · Answer 1 · 2015-02-12T06:26:00

Solution 1

Two problems:
1) User is an SQL Keyword, so using it for the name of your table is a little silly...
2) Don't use double quotes for a string, use single quotes with SQL.
Try this:

SQL

SELECT id FROM [User] WHERE Email = 'tu@dominio.com'

[edit]Typos... :sigh: [/edit]

Posted 12-Feb-15 6:26am

OriginalGriff

Updated 12-Feb-15 6:27am

v2

Comments

Cesar Bretana Gonzalez 12-Feb-15 12:35pm

yeah, but I'm using MySQL, so I'm referencing to my fields like this:

SELECT id FROM test.User WHERE test.User.mail = 'your@domain.com', would be something with the at(@) symbol?

Wendelius · Answer 2 · 2015-02-12T06:51:00

Solution 2

One possibility is that you have a mismatch in upper/lower characters. Try something like

SQL

SELECT id FROM User WHERE lower(Email) = "tu@dominio.com"

Posted 12-Feb-15 6:51am

Wendelius

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Maciej Los 12-Feb-15 13:32pm

+5