Mysql 埃格门特。 CREATE TABLE `hcm_compartments` ( `cid` int(10) NOT NULL AUTO_INCREMENT, `leaseid` int(10) NOT NULL, `segment` int(10) NOT

埃格门特。

CREATE TABLE `hcm_compartments` (
`cid` int(10) NOT NULL AUTO_INCREMENT,
`leaseid` int(10) NOT NULL,
`segment` int(10) NOT NULL DEFAULT '0',
PRIMARY KEY (`cid`),
KEY `leaseid` (`leaseid`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE `hcm_contracts` (
`cid` int(10) NOT NULL AUTO_INCREMENT,
`leaseid` int(10) NOT NULL,
`groupid` int(11) DEFAULT NULL,
`license` varchar(100) NOT NULL,
`dateadded` int(10) NOT NULL DEFAULT '0',
`BeginDate` int(10) DEFAULT NULL,
PRIMARY KEY (`cid`),
KEY `leaseid` (`leaseid`),
KEY `groupid` (`groupid`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE `hcm_forest` (
`ForestID` int(10) NOT NULL AUTO_INCREMENT,
`ForestName` varchar(50) NOT NULL,
`ForestLabel` varchar(5) NOT NULL,
PRIMARY KEY (`ForestID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE `hcm_invoices` (
`iid` int(10) NOT NULL AUTO_INCREMENT,
`contractid` int(10) NOT NULL DEFAULT '0',
`dateadded` int(10) NOT NULL DEFAULT '0',
`fiscalyear` int(4) NOT NULL DEFAULT '0',
`totalbilled` decimal(10,2) NOT NULL DEFAULT '0.00',
`totalpaid` decimal(10,2) NOT NULL DEFAULT '0.00',
`balance` decimal(10,2) NOT NULL DEFAULT '0.00',
PRIMARY KEY (`iid`),
KEY `contractid` (`contractid`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE `hcm_leases` (
`bid` int(11) NOT NULL AUTO_INCREMENT,
`serial` int(10) NOT NULL DEFAULT '0',
`forest` int(10) NOT NULL DEFAULT '0',
`dateadded` int(10) NOT NULL DEFAULT '0',
`acres` decimal(10,2) NOT NULL DEFAULT '0.00',
PRIMARY KEY (`bid`),
KEY `forest` (`forest`),
KEY `serial` (`serial`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;


SET @timenow = UNIX_TIMESTAMP(NOW());

INSERT INTO hcm_forest (ForestID, ForestName, ForestLabel) VALUES (1, 'North', 'N'), (2, 'South', 'S'), (3, 'East', 'E'), (4, 'West', 'W') ;
INSERT INTO hcm_leases (bid, serial, forest, dateadded, acres)
VALUES
(1, 1000, 1, @timenow, 100),
(2, 1001, 2, @timenow, 125),
(3, 1002, 3, @timenow, 250) ;

INSERT INTO hcm_compartments (leaseid, segment)
VALUES
(1, 1),(1, 2),(1, 3),
(2, 1),(2, 2),(2, 3), (2, 4),
(3, 1),(3, 2),(3, 3) ;

INSERT INTO hcm_contracts (leaseid, groupid, license, dateadded, BeginDate)
VALUES
(1, 1, 'N-1000', @timenow, @timenow),
(2, 2, 'N-1000', @timenow, @timenow),
(3, 3, 'N-1000', @timenow, @timenow) ;

INSERT INTO hcm_invoices (contractid, dateadded, fiscalyear, totalbilled, totalpaid, balance)
VALUES
(1, @timenow, 2016, 125.00, 125.00, 0.00),
(1, @timenow, 2016, 150.00, 0.00, 150.00),
(1, @timenow, 2016, 100.00, 75.00, 25.00),

(2, @timenow, 2016, 1000.00, 125.00, 875.00),
(2, @timenow, 2016, 550.00, 550.00, 0.00),
(2, @timenow, 2016, 100.00, 0.00, 100.00),
(2, @timenow, 2016, 5000.00, 4500.00, 500.00),

(3, @timenow, 2016, 100.00, 100.00, 0.00),
(3, @timenow, 2016, 250.00, 50.00, 200.00) ;

SET @fy = 2016 ;

SELECT SUM(i.totalbilled) totalbilled, l.forest
FROM hcm_leases l,
    hcm_compartments cm,
    hcm_contracts c,
    hcm_invoices i
WHERE i.contractid = c.cid
    AND c.leaseid = l.bid
    AND l.bid = cm.leaseid
    /*
    * The reason why I join into the hcm_compartments table is
    * because the user may wish to exclude all but a single
    * desired segment column from the hcm_compartments table.
    */
    #AND cm.segment = 1
    AND l.forest = 1
    AND i.fiscalyear = @fy ;