2. 中的广告假设：“你不能设定某一天，并得到他的价值观”......好吧，你可以：
< URL > 本身包含数据选择标签：
http://query.yahooapis.com/v1/public/yql?q=
select * from yahoo.finance.historicaldata
where symbol = "AAPL"
and startDate = "2012-09-11"
and endDate = "2014-02-11"
&format=json
&diagnostics=true
&env=store://datatables.org/alltableswithkeys
&callback=
所以要获得 2014-08-10 .. 2014-08-12 在“AAPL”上的最后几天（一对，注意结果中 endDate 的解释）：
"results":{
"quote":[
{
"Symbol":"AAPL",
"Date":"2014-08-12",
"Open":"96.04",
"High":"96.88",
"Low":"95.61",
"Close":"95.97",
"Volume":"33795000",
"Adj_Close":"95.97"
},
{
"Symbol":"AAPL",
"Date":"2014-08-11",
"Open":"95.27",
"High":"96.08",
"Low":"94.84",
"Close":"95.99",
"Volume":"36585000",
"Adj_Close":"95.99"
}
]
}
（完整的 Y! 响应记录）
{
"query":{
"count":2,
"created":"2014-08-14T21:32:41Z",
"lang":"en-EN",
"diagnostics":{
"url":[
{
"execution-start-time":"0",
"execution-stop-time":"1",
"execution-time":"1",
"content":"http://www.datatables.org/yahoo/finance/yahoo.finance.historicaldata.xml"
},
{
"execution-start-time":"5",
"execution-stop-time":"16",
"execution-time":"11",
"content":"http://ichart.finance.yahoo.com/table.csv?g=d&f=2014&e=12&c=2014&b=10&a=7&d=7&s=AAPL"
},
{
"execution-start-time":"18",
"execution-stop-time":"28",
"execution-time":"10",
"content":"http://ichart.finance.yahoo.com/table.csv?g=d&f=2014&e=12&c=2014&b=10&a=7&d=7&s=AAPL"
}
],
"publiclyCallable":"true",
"cache":[
{
"execution-start-time":"4",
"execution-stop-time":"4",
"execution-time":"0",
"method":"GET",
"type":"MEMCACHED",
"content":"91a0664b4e7cf29d40cce123239fec85"
},
{
"execution-start-time":"17",
"execution-stop-time":"18",
"execution-time":"1",
"method":"GET",
"type":"MEMCACHED",
"content":"31dd9633be8581af77baa442f314c921"
}
],
"query":[
{
"execution-start-time":"5",
"execution-stop-time":"17",
"execution-time":"12",
"params":"{url=[http://ichart.finance.yahoo.com/table.csv?g=d&f=2014&e=12&c=2014&b=10&a=7&d=7&s=AAPL]}",
"content":"select * from csv(0,1) where url=@url"
},
{
"execution-start-time":"18",
"execution-stop-time":"28",
"execution-time":"10",
"params":"{columnsNames=[Date,Open,High,Low,Close,Volume,Adj_Close], url=[http://ichart.finance.yahoo.com/table.csv?g=d&f=2014&e=12&c=2014&b=10&a=7&d=7&s=AAPL]}",
"content":"select * from csv(2,0) where url=@url and columns=@columnsNames"
}
],
"javascript":{
"execution-start-time":"3",
"execution-stop-time":"29",
"execution-time":"25",
"instructions-used":"34359",
"table-name":"yahoo.finance.historicaldata"
},
"user-time":"31",
"service-time":"23",
"build-version":"0.2.2666"
},
"results":{
"quote":[
{
"Symbol":"AAPL",
"Date":"2014-08-12",
"Open":"96.04",
"High":"96.88",
"Low":"95.61",
"Close":"95.97",
"Volume":"33795000",
"Adj_Close":"95.97"
},
{
"Symbol":"AAPL",
"Date":"2014-08-11",
"Open":"95.27",
"High":"96.08",
"Low":"94.84",
"Close":"95.99",
"Volume":"36585000",
"Adj_Close":"95.99"
}
]
}
}
}
注意事项：
人们可能会发现，成熟的查询处理重新包装了来自以下来源和后处理的数据源请求：
http://ichart.finance.yahoo.com/table.csv?g=d&f=2014&e=12&c=2014&b=10&a=7&d=7&s=AAPL
产生：
Date,Open,High,Low,Close,Volume,Adj Close
2014-08-12,96.04,96.88,95.61,95.97,33795000,95.97
2014-08-11,95.27,96.08,94.84,95.99,36585000,95.99
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