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我在序列化nodeJS中的幾個函數時出現問題。我想要做的是創建一個臨時視圖,讀取它,然後將其放入ft數組中的每個元素。這是我的代碼。我在NodeJS中使用以下函數。 Db是節點的sqlite3插件。NodeJS,SQL異步問題
function(){
ft.forEach(function(fti){
var view="create temporary view ..."+fti;
db.exec(view,aftaView)
console.log("created View "+fti);
});
};
function aftaView(err){
if (err) console.log(err+" K ");
participantID.forEach(function(prt){
Obj.forEach(function(bj){
console.log("Object: "+bj);
//perform second query here
db.all("select ...", {$pID:prt,$obj:bj}, function(err,rows){
if (err) throw err;
rows.forEach(function (row) {
//console.log(row);
});
//perform third function here, in readiness for second iterarion of the very // first loop
db.run("drop view Kemp");
});
});
});
};
這裏是控制檯輸出:
created View 1
created View 2
created View 3
created View 4
created View 5
created View 6
//fails
Error: SQLITE_ERROR: view already exists
我清楚地需要確保第二個功能,在第一循環的每個項目運行時,我只是不知道怎麼辦。任何幫助將不勝感激
我該怎麼做,@Alxandr? – 2013-05-05 06:25:04