我目前的查询是：
select rulename,status, count(*)
from triggered_rule_info
group by status, rulename
结果是：
rulename status count
eorule1 ack 1
eorule1 open 1
eorule1 close 7
eorule2 open 1
eorule2 ack 1
但我希望结果是：
rulename ack open close
eorule1 1 1 7
eorule2 1 1
我怎样才能做到这一点？我的postgresql版本是9.4。
答案 0 :(得分：1)
为此您可以使用filter子句：
select rulename
count(*) filter (where status = 'ack') as ack,
count(*) filter (where status = 'open') as open,
count(*) filter (where status = 'close') as closed
from triggered_rule_info
group by rulename
order by rulename;
答案 1 :(得分：0)
您可以使用 var chartData = {
"barCircleMobile":[
{"index":0.3, "value":100, "fill":"#37b54e", "label":"WebMd Health"},
{"index":0.4, "value":50, "fill":"#69dad9", "label":"Livestrong.com"},
{"index":0.5, "value":31.25, "fill":"#00a8dd", "label":"Everyday
Health"},
{"index":0.6, "value":18.75, "fill":"#157996", "label":"About.com"},
{"index":0.7, "value":6.5, "fill":"#0068ff", "label":"Drugs.com"},
],
"barCircleWeb":[
{"index":0.3, "value":100, "fill":"#20d974", "label":"WebMD Health"},
{"index":0.4, "value":40, "fill":"#3bc1c4", "label":"Everyday Health"},
{"index":0.5, "value":30, "fill":"#23889d", "label":"Livestrong.com"},
{"index":0.6, "value":20, "fill":"#0071a3", "label":"About.com Health
Section"},
{"index":0.7, "value":10, "fill":"#0042a3", "label":"Healthline"},
]
};
function drawBarCircleChart(data,target,values,labels){
var w = 362,
h = 362,
size = data[0].value * 1,
radius = 200,
sectorWidth = .1,
radScale = 25,
sectorScale = 1.75,
target = d3.select(target),
valueText = d3.select(values),
labelText = d3.select(labels);
var arc = d3.svg.arc()
.innerRadius(function(d,i){return (d.index/sectorScale) * radius +
radScale; })
.outerRadius(function(d,i){return ((d.index/sectorScale) +
(sectorWidth/sectorScale)) * radius + radScale; })
.startAngle(Math.PI)
.endAngle(function(d) { return Math.PI + (d.value / size) * 2 * Math.PI;
});
var path = target.selectAll("path")
.data(data);
//TODO: seperate color and index from data object, make it a pain to update
object order
path.enter().append("svg:path")
.attr("fill",function(d,i){return d.fill})
.transition()
.ease("elastic")
.duration(1000)
.delay(function(d,i){return i*100})
.attrTween("d", arcTween);
valueText.selectAll("tspan").data(data).enter()
.append("tspan")
.attr({
x:50,
y:function(d,i){return i*14},
"text-anchor":"end"
})
.text(function(d,i){return data[i].value});
labelText.selectAll("tspan").data(data).enter()
.append("tspan")
.attr({
x:0,
y:function(d,i){return i*14}
})
.text(function(d,i){return data[i].label});
function arcTween(b) {
var i = d3.interpolate({value: 0}, b);
return function(t) {
return arc(i(t));
};
}
}
// Animation Queue
setTimeout(function(){drawBarCircleChart(chartData.barCircleWeb,"#circleBar-
web-chart","#circleBar-web-values","#circleBar-web-labels")},500);
setTimeout(function()
{drawBarCircleChart(chartData.barCircleMobile,"#circleBar-mobile-
chart","#circleBar-mobile-values","#circleBar-mobile-labels")},800);
d3.select("#circleBar-web-icon")
.transition()
.delay(500)
.duration(500)
.attr("opacity","1");
d3.select("#circleBar-web-text")
.transition()
.delay(750)
.duration(500)
.attr("opacity","1");
d3.select("#circleBar-web-clipLabels")
.transition()
.delay(600)
.duration(1250)
.attr("height","150");
d3.select("#circleBar-mobile-icon")
.transition()
.delay(800)
.duration(500)
.attr("opacity","1");
d3.select("#circleBar-mobile-text")
.transition()
.delay(1050)
.duration(500)
.attr("opacity","1");
d3.select("#circleBar-mobile-clipLabels")
.transition()
.delay(900)
.duration(1250)
.attr("height","150");
和CASE - WHEN子句来获得所需的结果。如果GROUP BY包含更多其他值，则可能需要添加更多CASE语句。
<强> 实施例 ：
status