la somme des champs d'une table mysql en utilisant une requête

Question

j'ai le tableau suivant dans mon databse ..

CREATE TABLE IF NOT EXISTS `client` (
    `CARD_NO` varchar(15) NOT NULL, 
    `F_NAME` varchar(20) NOT NULL, 
    `L_NAME` varchar(20) NOT NULL, 
    `SEX` varchar(5) NOT NULL, 
    `DOB` date NOT NULL, 
    `SUBCITY` varchar(10) NOT NULL, 
    `KEBELE` varchar(5) NOT NULL, 
    `HOUSE_NO` varchar(10) NOT NULL, 
    `TEL_NO` int(10) DEFAULT NULL, 
    `REGION_NO` varchar(10) DEFAULT NULL, 
    PRIMARY KEY (`CARD_NO`), 
    KEY `REGION_NO` (`REGION_NO`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- 
-- Dumping data for table `client` 
-- 

INSERT INTO `client` (`CARD_NO`, `F_NAME`, `L_NAME`, `SEX`, `DOB`, `SUBCITY`, `KEBELE`, `HOUSE_NO`, `TEL_NO`, `REGION_NO`) VALUES 
('1', '', '', 'male', '0000-00-00', '', '', '', NULL, '01'), 
('2', '', '', 'male', '0000-00-00', '', '', '', NULL, '02'), 
('3', '', '', 'femal', '0000-00-00', '', '', '', NULL, '03'), 
('4', '', '', 'femal', '0000-00-00', '', '', '', NULL, '04'), 
('5', '', '', 'male', '0000-00-00', '', '', '', NULL, '05'), 
('6', '', '', 'male', '0000-00-00', '', '', '', NULL, '05'); 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `non_pregnant` 
-- 

CREATE TABLE IF NOT EXISTS `non_pregnant` (
    `VCT_CODE` varchar(15) NOT NULL, 
    `CARD_NO` varchar(15) DEFAULT NULL, 
    `RISK_OF_HIV` varchar(30) NOT NULL, 
    `PURPOSE` varchar(10) NOT NULL, 
    PRIMARY KEY (`VCT_CODE`), 
    KEY `CARD_NO` (`CARD_NO`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- 
-- Dumping data for table `non_pregnant` 
-- 

INSERT INTO `non_pregnant` (`VCT_CODE`, `CARD_NO`, `RISK_OF_HIV`, `PURPOSE`) VALUES 
('1', '1', '', ''), 
('2', '2', '', ''), 
('3', '3', '', ''), 
('4', '4', '', ''), 
('5', '5', '', ''), 
('6', '6', '', ''); 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `non_pregnant_vct` 
-- 

CREATE TABLE IF NOT EXISTS `non_pregnant_vct` (
    `VCT_CODE` varchar(15) NOT NULL DEFAULT '', 
    `DATE_TESTED` date DEFAULT NULL, 
    `TB_RESULT` varchar(10) NOT NULL, 
    `HIV_RESULT` varchar(10) NOT NULL, 
    `STD_RESULT` varchar(10) NOT NULL, 
    PRIMARY KEY (`VCT_CODE`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- 
-- Dumping data for table `non_pregnant_vct` 
-- 

INSERT INTO `non_pregnant_vct` (`VCT_CODE`, `DATE_TESTED`, `TB_RESULT`, `HIV_RESULT`, `STD_RESULT`) VALUES 
('1', NULL, '', 'pos', ''), 
('2', NULL, '', 'pos', ''), 
('3', NULL, '', 'neg', ''), 
('4', NULL, '', 'neg', ''), 
('5', NULL, '', 'neg', ''), 
('6', NULL, '', 'pos', ''); 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `region` 
-- 

CREATE TABLE IF NOT EXISTS `region` (
    `REGION_NO` varchar(10) NOT NULL, 
    `REGION_NAME` varchar(10) NOT NULL, 
    PRIMARY KEY (`REGION_NO`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- 
-- Dumping data for table `region` 
-- 

INSERT INTO `region` (`REGION_NO`, `REGION_NAME`) VALUES 
('01', 'washington'), 
('02', 'newyork'), 
('03', 'london'), 
('04', 'paris'), 
('05', 'burlin'); 

voici ce que je veux en sortie ..

Région Femme Homme total test positif test positif test positif              

et c'est la requête que j'ai essayé de le comprendre, mais Stil l mal ..

SELECT r.region_name, c.sex = 'male' as counting, c.sex = 'femal' as counting, v.hiv_result = 'pos' as MalePos from region r 
left join client c 
on c.region_no = r.region_no 
left join non_pregnant p 
on c.card_no = p.card_no 
left join non_pregnant_vct v 
on p.vct_code = v.vct_code 
group by c.region_no; 

Answer 1

Votre description de la sortie que vous voulez est à couper le souffle pas clair, mais je vais donner un coup de feu. Essayez ceci:

SELECT 
    r.region_name, 
    SUM(c.sex = 'male') as NMale, 
    SUM(c.sex = 'femal') as NFemale, 
    SUM(v.hiv_result = 'pos') as TotalPos, 
    SUM(c.sex = 'male' AND v.hiv_result = 'pos') as MalePos, 
    SUM(c.sex = 'femal' AND v.hiv_result = 'pos') as FemalePos 
FROM region r 
LEFT JOIN client c ON c.region_no = r.region_no 
LEFT JOIN non_pregnant p ON c.card_no = p.card_no 
LEFT JOIN non_pregnant_vct v ON p.vct_code = v.vct_code 
GROUP BY c.region_no