get tablename where the variable in a column matches - mysql

Question

How to get the tablenames where nname is "new5" in all tables?.I have tried the query below but I dont get the solution(I dont think the query is right either).I really appreciate any help.Thanks in Advance.
http://sqlfiddle.com/#!2/aa1b8/7
CREATE TABLE if not exists tblC1
(
id int(11) NOT NULL auto_increment ,
nname varchar(255),
PRIMARY KEY (id)
);
INSERT INTO tblC1 (id, nname) VALUES
('1', 'new1'),
('2', 'new2'),
('3', 'new3'),
('4', 'new4'),
('5', 'new5');
CREATE TABLE if not exists tblC2
(
id int(11) NOT NULL auto_increment ,
nname varchar(255),
PRIMARY KEY (id)
);
INSERT INTO tblC2 (id, nname) VALUES
('1', 'new1'),
('2', 'new21'),
('3', 'new31'),
('4', 'new41'),
('5', 'new51');
CREATE TABLE if not exists tblC3
(
id int(11) NOT NULL auto_increment ,
nname varchar(255),
PRIMARY KEY (id)
);
INSERT INTO tblC3 (id, nname) VALUES
('1', 'new1'),
('2', 'new21'),
('3', 'new31'),
('4', 'new41'),
('5', 'new5');
Query:
SELECT *
FROM (SELECT * FROM tblC1
UNION SELECT * FROM tblC2
UNION SELECT * FROM tblC3 ) as t2
where nname = "new5"

Answer 1

Add the table name to your single selects:
SELECT * FROM (
SELECT
'tblC1' as tbl, tblC1.*
FROM tblC1
UNION SELECT 'tblC2', tblC2.* FROM tblC2
UNION SELECT 'tblC3', tblC3.* FROM tblC3
) t
where t.nname = "new5"
should do. You need either the outer select or a where clause for every single select of your unions. And you've got to specify the tablename,
Fiddle