node-mysql通过时间戳选择记录

我想根据使用NodeJS和node-mysql的时间戳选择一系列记录。我的代码如下所示：node-mysql通过时间戳选择记录

sql = "SELECT pressure, temp1, temp2, UNIX_TIMESTAMP(timestamp)*1000 
AS unix_timestamp 
FROM observations WHERE timestamp >= STR_TO_DATE(? ,'%Y-%m-%d') 
ORDER BY unix_timestamp DESC LIMIT ?;" 

var current_temp = db.query(sql, 
start_date, num_records, 
    function(err, rows, fields){ 
    if (err){

变量start_date包含2013-03-01。如果我手动替换“？”在'2013-03-01'的STR_TO_DATE表达式中，我的查询起作用。但是，如果我尝试给我们变量替换我得到以下错误：

TypeError: Object 500 has no method 'apply' 
at Query.Sequence.end  (/home/ian/Documents/emacs/org/org_files/computer/nodejs/node_modules/mysql/lib/protocol/sequences/Sequence.js:66:24) 
at Query.ErrorPacket  (/home/ian/Documents/emacs/org/org_files/computer/nodejs/node_modules/mysql/lib/protocol/sequences/Query.js:89:8) 
at Protocol._parsePacket  (/home/ian/Documents/emacs/org/org_files/computer/nodejs/node_modules/mysql/lib/protocol/Protocol.js:169:24) 
at Parser.write  (/home/ian/Documents/emacs/org/org_files/computer/nodejs/node_modules/mysql/lib/protocol/Parser.js:62:12) 
at Protocol.write  (/home/ian/Documents/emacs/org/org_files/computer/nodejs/node_modules/mysql/lib/protocol/Protocol.js:36:16) 
at write (_stream_readable.js:547:24) 
at flow (_stream_readable.js:556:7) 
at Socket.pipeOnReadable (_stream_readable.js:588:5) 
at Socket.EventEmitter.emit (events.js:92:17) 
at emitReadable_ (_stream_readable.js:382:10)

来源

2013-03-19 geekinthesticks

你的变量应该是一个数组，定位根据它们出现在SQL语句中的顺序，如：

db.query(sql,[start_date, num_records], function(err, rows, fields){ logic ;})

来源

2013-03-19 13:06:34 ExxKA

node-mysql通过时间戳选择记录

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