这是我的“产品”表<canvas id="chart"></canvas>
var chartData = {
labels: [<?php echo '"'.implode('","', $chart_labels ).'"' ?>],
datasets: [
{
data: [<?php echo implode(',', $chart_numbers ) ?>],
backgroundColor: '#184b8f',
hoverBackgroundColor: '#ef3e42'
}
]
};
var barOptions = {
responsive: true,
maintainAspectRatio: false,
tooltips: {
enabled: false
},
hover: {
animationDuration: 0
},
legend: {
display: false
},
scales : {
xAxes : [{
gridLines : {
display: false
},
ticks: {
beginAtZero: true,
color: '#cfcfcf'
}
} ],
yAxes : [ {
gridLines : {
display: false
},
ticks: {
fontSize: 13,
fontFamily: "'Open Sans'",
fontWeight: 600,
}
}]
},
animation: {
duration: 500,
easing: "easeOutQuart",
}
};
function removeData(chart) {
chart.data.labels.pop();
chart.data.datasets.forEach((dataset) => {
dataset.data.pop();
});
chart.resize();
chart.update();
}
function addData(chart, label, data) {
chart.data.labels.push(label);
chart.data.datasets.forEach((dataset) => {
dataset.data.push(data);
});
chart.resize();
chart.update();
}
var ctx = document.getElementById("chart").getContext("2d");
var myBar = new Chart(ctx, {
type: 'horizontalBar',
data: chartData,
options: barOptions
});
：
WHERE sku RLIKE 'IP-205-1067-16' or sku IN ('205-d-SC55G','205-d-RC099G','205-d-SC45G','205-d-RC099G')这是我的“imprint_locations”表+---------------------------+---------+-----------------------+-----------------------+-------------------------+----------------------------+
| sku | price_1 | full_color_imprint_id | embroidery_imprint_id | screen_print_imprint_id | laser_engraving_imprint_id |
+---------------------------+---------+-----------------------+-----------------------+-------------------------+----------------------------+
| IP-205-1067-16 | 1.55556 | NULL | NULL | 63276 | 32539 |
| IP-205-1067-16-39423495 | 1.55556 | NULL | NULL | 63276 | 32539 |
| IP-205-1067-16-1272347 | 1.55556 | NULL | NULL | 63276 | 32539 |
| IP-205-1067-16-56185 | 1.55556 | NULL | NULL | 63276 | 32539 |
| IP-205-1067-16-1706399150 | 1.55556 | NULL | NULL | 63276 | 32539 |
| 205-d-SC45G | 45 | NULL | NULL | NULL | NULL |
| 205-d-SC55G | 55 | NULL | NULL | NULL | NULL |
| 205-d-RC059G | 0.59 | NULL | NULL | NULL | NULL |
| 205-d-RC099G | 0.99 | NULL | NULL | NULL | NULL |
+---------------------------+---------+-----------------------+-----------------------+-------------------------+----------------------------+
：
WHERE imprint_method_id IN (63276,32539)这是我想要达到的最终结果：
+--------+-------------------+------------+-------------+--------------+
| id | imprint_method_id | name | setup_sku | running_sku |
+--------+-------------------+------------+-------------+--------------+
| 809128 | 32539 | Body Right | 205-d-SC45G | 205-d-RC059G |
| 809129 | 32539 | Body Left | 205-d-SC45G | 205-d-RC059G |
| 808288 | 63276 | Body Right | 205-d-SC55G | 205-d-RC099G |
| 808289 | 63276 | Body Left | 205-d-SC55G | 205-d-RC099G
+--------+-------------------+------------+-------------+--------------+
您可以看到product表的screen_print_imprint_id与imprint_locations表中的imprint_method_id相匹配。
答案 0 :(得分：0)
您需要使用product表作为中间关系表，与imprint_locations表连接两次。
您可以为要链接的每个ID字段使用单独的联接，也可以使用MySQL pivot table中的方法加入一次并将价格转移到相应的列中。
SELECT DISTINCT p1.sku,
MAX(IF(p1.embroidery_imprint_id = l.imprint_method_id AND p2.sku = l.setup_sku, p2.price_1, NULL)) AS embroidery_imprint_id_setup_sku_price_1,
MAX(IF(p1.embroidery_imprint_id = l.imprint_method_id AND p2.sku = l.running_sku, p2.price_1, NULL)) AS embroidery_imprint_id_running_sku_price_1,
MAX(IF(p1.screen_print_imprint_id = l.imprint_method_id AND p2.sku = l.setup_sku, p2.price_1, NULL)) AS screen_print_imprint_id_setup_sku_price_1,
MAX(IF(p1.screen_print_imprint_id = l.imprint_method_id AND p2.sku = l.running_sku, p2.price_1, NULL)) AS screen_print_imprint_id_running_sku_price_1,
MAX(IF(p1.laser_engraving_imprint_id = l.imprint_method_id AND p2.sku = l.setup_sku, p2.price_1, NULL)) AS laser_engraving_imprint_id_setup_sku_price_1,
MAX(IF(p1.laser_engraving_imprint_id = l.imprint_method_id AND p2.sku = l.running_sku, p2.price_1, NULL)) AS laser_engraving_imprint_id_running_sku_price_1
FROM product AS p1
JOIN imprint_locations AS l ON l.imprint_method_id IN (p1.embroidery_imprint_id, p1.screen_print_imprint_id, p1.laser_engraving_imprint_id)
JOIN product AS p2 ON p2.sku IN (l.running_sku, l.setup_sku)
GROUP BY p1.sku