I have two tables:
CREATE TABLE sections (id int, section_name varchar(16), section_title int, section_description int);
INSERT INTO sections VALUES(1, 'index', 1, 2);
INSERT INTO sections VALUES(2, 'contact', 3, 4);
CREATE TABLE texts (id int, text_value varchar(64), text_language varchar(2), text_link int);
INSERT INTO texts VALUES(1, 'Home', 'en', 1);
INSERT INTO texts VALUES(2, 'Inicio', 'es', 1);
INSERT INTO texts VALUES(3, 'Welcome', 'en', 2);
INSERT INTO texts VALUES(4, 'Bienvenidos', 'es', 2);
INSERT INTO texts VALUES(5, 'Contact', 'en', 3);
INSERT INT开发者_StackOverflow中文版O texts VALUES(6, 'Contacto', 'es', 3);
INSERT INTO texts VALUES(7, 'Contact Us', 'en', 4);
INSERT INTO texts VALUES(8, 'Contactenos', 'es', 4);
I'm newbie with queries and I don't know how to do next:
SELECT `sections`.`section_title`
, `sections`.`section_description`
FROM `sections`
INNER JOIN `texts`
ON (`sections`.`section_title` = `texts`.`text_link`) AND (`sections`.`section_description` = `texts`.`text_link`)
WHERE `sections`.`section_name` = 'index' AND `texts`.`text_language` = 'en'
;
MySQL returned an empty result set :(
I expect to obtain using sections
.section_name
= 'index' and texts
.text_language
= 'en':
section_title = 'Home'
section_description = 'Welcome'
or using sections
.section_name
= 'contact' and texts
.text_language
= 'es':
section_title = 'Contacto'
section_description = 'Contactenos'
You'll need to join
twice... like this:
SELECT
t1.text_value AS section_title,
t2.text_value AS section_description
FROM `sections`
INNER JOIN `texts` AS t1
ON (`sections`.`section_title` = t1.`text_link`)
INNER JOIN `texts` AS t2
ON (`sections`.`section_description` = t2.`text_link`)
WHERE `section_name` = 'index'
AND t1.`text_language` = 'en'
AND t2.`text_language` = 'en'
I edited the above query a little, but has to low reputation to make a comment =P Try again (works for me):
SELECT t1.text_value AS section_title,
t2.text_value AS section_description
FROM `sections` AS s
INNER JOIN `texts` as t1 ON (s.`section_title` = t1.`text_link`)
INNER JOIN `texts` as t2 ON (s.`section_description` = t2.`text_link`)
WHERE s.`section_name` = 'index'
AND t1.`text_language` = 'en'
AND t2.`text_language` = 'en'
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