[英]How to access JSON object element when the name of the element is a date?
[英]Access to Json element with ' ' name (Subquery mysql nodejs)
我正在使用 NodeJS 和 Mysql 在后端工作,一切都很好,但最近我遇到了一個小細節,自從添加了一個 SUBQUERY 之后我就被卡住了。
這是 Mysql 查詢:
var GetHistoryPayments = function(code){
var query = "SELECT DISTINCT students.student_code, " +
"acc.id, " +
"acc.StudentCode, " +
"acc.DocumentDate1, " +
"acc.DocEntry, " +
"acc.DocumentNumber1, " +
"acc.DocTotal1, " +
"acc.GrosProfit, " +
"acc.SumApplied, " +
"acc.DocumentDate2, " +
"acc.DocumentNumber2, " +
"acc.DiffDocTotalPaidToDate as total_pay, " +
"acc.LicTradNum, " +
"acc.created_at, " +
"acc.updated_at, " +
"(SELECT COUNT(*) FROM sap_accounting_state aa WHERE aa.DocumentNumber1 = acc.DocumentNumber1 and aa.tipo like 'Nota%' and aa.SumApplied > 0 ) as credit_notes " +
"FROM sap_accounting_state_students students INNER JOIN sap_accounting_state acc ON students.student_code = acc.StudentCode " +
"WHERE acc.DiffDocTotalPaidToDate = 0 " +
"and acc.Orden = 1 " +
"and acc.DocumentDate1 > '2018-06-01' " +
"and acc.StudentCode = '" + code + "' " +
"GROUP BY acc.DocumentNumber1 " +
"ORDER BY acc.DocumentDate1 desc";
return query;
}
返回的對象數組沒問題,但 SUBQUERY 對象真的很奇怪,它返回一個空名稱( '': { credit_notes: 0 }
)。 我想 SUBQUERY 創建一個具有已知名稱的新對象。 ¿How can access a '' json element?,如何將名稱 SUBQuery 如: 'sub': { credit_notes: 0 }
?.
謝謝。
[ RowDataPacket {
students: { student_code: '18018' },
acc:
{ id: 3836,
StudentCode: '18018',
DocumentDate1: 2019-01-01T05:00:00.000Z,
DocEntry: 74998,
DocumentNumber1: 10042438,
DocTotal1: 1839017,
GrosProfit: 1839017,
SumApplied: 0,
DocumentDate2: null,
DocumentNumber2: 0,
total_pay: 0,
LicTradNum: '79593354',
created_at: 2019-01-18T19:48:23.000Z,
updated_at: 2019-01-18T19:48:23.000Z },
'': { credit_notes: 0 } },
RowDataPacket {
students: { student_code: '18018' },
acc:
{ id: 3842,
StudentCode: '18018',
DocumentDate1: 2018-12-06T05:00:00.000Z,
DocEntry: 72048,
DocumentNumber1: 10039576,
DocTotal1: 346500,
GrosProfit: 346500,
SumApplied: 0,
DocumentDate2: null,
DocumentNumber2: 0,
total_pay: 0,
LicTradNum: '79593354',
created_at: 2019-01-18T19:48:23.000Z,
updated_at: 2019-01-18T19:48:23.000Z },
'': { credit_notes: 1 } } ... ]
只需將括號作為屬性訪問器。
var item = { '': 'foo' }; console.log(item['']);
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