小编dan*_*ang的帖子

Oracle中的NULL存储

我在Oracle 11g Standard One Edition中有一个表:

表格1

col1 col2 col3 col4 col5 col6 col7 col8       col9 col10 col11
1    NULL 2    3    4    5    NULL NULL       19   21    22
1    NULL 2    3    4    5    NULL 1 Jan 2009 19   21    22
1    NULL 2    3    4    5    NULL NULL       19   21    22
1    9    2    3    4    5    A    NULL       19   21    22
1    NULL 2    3    4    5    B    NULL       19   21    22
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表格desc是:

Name                 Null Type          
-------------------- ---- …
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sql oracle

15
推荐指数
1
解决办法
3883
查看次数

在SQL中查找匹配间隔 - Oracle

我有一张桌子:

表:

start         end
1 Jan 09    31 Jan 2009
1 Feb 09    28 Feb 2009
1 Mar 09    31 Mar 2009
1 Apr 09    01 May 2009
1 May 09    31 May 2009
1 Jun 09    01 Jul 2009
1 Jul 09    31 Jul 2009
1 Aug 09    31 Aug 2009
1 Sep 09    01 Oct 2009
1 Oct 09    31 Oct 2009
1 Nov 09    01 Dec 2009
1 Dec 09    31 Dec 2009
1 Jan 10    31 …
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sql oracle date

10
推荐指数
1
解决办法
586
查看次数

删除因缩放导致的Google地图上的网格线

如何从谷歌地图中删除白色网格线?我添加了zoom:0.7 css属性来映射div,从我的研究中,这些属性都添加了白线.

是否可以从谷歌地图中删除白线而不删除缩放属性?因为我需要地图与现在完全相同.或者我们有缩放的替代方案吗?

这是代码:

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 5,
    disableDefaultUI: true,
    center: {
      lat: 38.755724,
      lng: -96.492369
    }
  });

}
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html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map {
  height: 100%;
  zoom: 0.7;
  -moz-transform: scale(0.8);
  -moz-transform-origin: 0 0;
}
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<div id="map"></div>
<script async defer src="https://maps.googleapis.com/maps/api/js?callback=initMap"></script>
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以下是它的外观:

带有网格线的Google地图

javascript css google-maps

8
推荐指数
1
解决办法
3180
查看次数

Python - psycopg2 执行后出错

在 Python 中执行我的代码时出现此错误。

这是我的 Python - DataBaseHelper.py:

import psycopg2
#class
class DataBaseHelper:
    database = "testdata";user = "test";password = "pass123"; host = "mtest.75tyey.us-east-1.rds.amazonaws.com"

    #create and return the connection of database
    def getConection(self):
        self.conn = psycopg2.connect(database=self.database, user = self.user, password = self.password, host = self.host, port = "5432")
        return self.conn
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然后我导入这个文件并在另一个 python 文件中使用 - MyScript.py:

import sys
import uuid
from DBHelper import DataBaseHelper
from ExecutionLogHelper import ExecutionLogHelper
from GotUtility import GotUtility


class MyScript:
   def __init__(self,):
        self.con = DataBaseHelper().getConection()
        self.logHelper = ExecutionLogHelper()
        self.uuid …
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python psycopg2

8
推荐指数
1
解决办法
656
查看次数

Google图表问题与Sankey图表

我有一张Sankey图表.它有2个部分 - 蔬菜和Frutis.我不想要蔬菜触手.

那可能吗?

这是截图:

问题

这是我目前的Sankey Chart代码:

<html>
  <head>
     <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>

    <style>
        .my-padding {
            margin-top: 50px;
            margin-bottom: 50px;
            margin-right:50px;
        }
       </style>
    <script type="text/javascript">
      google.charts.load('current', {'packages':['sankey']});
      google.charts.setOnLoadCallback(drawChart);

      function drawChart() {
        var data = new google.visualization.DataTable();
        data.addColumn('string', 'From');
        data.addColumn('string', 'To');
        data.addColumn('number', 'Weight');
        data.addRows([


         [ 'Vegetables 70.2%',, 70.2],

          [ 'Fruits 29.8%', 'Orange 9%', 9 ],
          [ 'Fruits 29.8%', 'Apple 8.6%', 8.6 ],
          [ 'Fruits 29.8%', 'Banana 7.9%', 7.9 ],
          [ 'Fruits 29.8%', 'Grapes 4.3%', 4.3 ],

          [ 'Orange 9%', …
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javascript charts google-visualization

7
推荐指数
1
解决办法
1126
查看次数

在Mac中安装ROracle

我在Mac OS Sierra上.

我已经尝试过 - 在OS X Mavericks上安装RODBC/ROracle软件包,但它没有帮助.

这就是我做的:

  • http://www.oracle.com/technetwork/topics/intel-macsoft-096467.html下载- Basic,Sql plus,odbc
  • 在instantclient_12_1中解压缩到我的主文件夹中
  • ln -s libclntsh.dylib.12.1 libclntsh.dylib
  • export DYLD_LIBRARY_PATH =/Users/dhananjaygoel/instantclient_12_1:$ DYLD_LIBRARY_PATH
  • R CMD INSTALL --configure-args =' - with-oci-lib =/Users/dhananjaygoel/instantclient_12_1'ROracle_1.3-1.tar.gz

它给了我以下错误:

* installing to library ‘/Library/Frameworks/R.framework/Versions/3.3/Resources/library’
* installing *source* package ‘ROracle’ ...
** package ‘ROracle’ successfully unpacked and MD5 sums checked
configure: creating ./config.status
config.status: creating src/Makevars
** libs
clang -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I/Users/dhananjaygoel/instantclient_12_1/sdk/include -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include    -fPIC  -Wall -mtune=core2 -g -O2  -I/opt/local/include -c rodbi.c -o rodbi.o
rodbi.c:2432:53: warning: …
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macos r

7
推荐指数
1
解决办法
677
查看次数

iframe中的Javascript日期选择器错误

我有一个页面https://dev.leadformly.com/datepicker有一个iframe在那特定的'',我正在通过以下代码的ajax调用动态编写HTML代码.

<script>
  $(document).ready(function(){
    $.post(URL,
        function (data) { //here it retruns the HTML code
          $("body").html('<iframe style="width:100%;height:384px;"></iframe>');
          $("body iframe")[0].contentDocument.write(data.democode);
        },
        'json'
      );
    });
</script>
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现在,当我点击日期选择器时,它会在控制台中抛出错误,如:

Uncaught TypeError: Cannot read property 'top' of undefined
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你能帮我解决这个问题吗?或者只是解释原因,这将有助于我解决它

html javascript iframe jquery bootstrap-daterangepicker

7
推荐指数
1
解决办法
895
查看次数

Postgres - 创建表非常慢 - 带有分区和 BRIN 索引

我有一张包含超过 2.6 亿条记录的表。我已经为表创建了分区并对其进行了索引。

CREATE TABLE qt_al_90k
(
    rec_id integer,
    user_id integer,
    user_text text,
    user_number double precision,
    user_date date,
    user_seq integer,
    my_sequence integer
) PARTITION BY RANGE (rec_id);
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分区查询:

CREATE TABLE qt_al_90k_rec_id_1 PARTITION OF qt_al_90k FOR VALUES FROM (0) TO (100000);
CREATE TABLE qt_al_90k_rec_id_2 PARTITION OF qt_al_90k FOR VALUES FROM (100000) TO (200000);
CREATE TABLE qt_al_90k_rec_id_3 PARTITION OF qt_al_90k FOR VALUES FROM (200000) TO (300000);
CREATE TABLE qt_al_90k_rec_id_4 PARTITION OF qt_al_90k FOR VALUES FROM (300000) TO (400000);
CREATE TABLE qt_al_90k_rec_id_5 PARTITION …
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sql postgresql query-performance

7
推荐指数
1
解决办法
562
查看次数

Lambda - 从 S3 导入 CSV 到 RDS MySQL

我有一个 Lambda 函数,它将特定的 CSV 文件从 S3 导入到 MySQL。但是,CSV 的文件大小约为 1 GB。当我运行此代码时,它不会处理并超时。

//s3 to rds
const fs = require("fs");
const AWS = require('aws-sdk');
var mysql = require('mysql');
var config = require('./config.json');
const s3 = new AWS.S3({
  accessKeyId: 'XXXXXXXXXXXXXXX',
  secretAccessKey: 'XXXXXXXXXXXXXXXXXXXXXXXXXXxx'
});
var filePath = `localfilepath`;

var pool = mysql.createPool({
  host: config.dbhost,
  user: config.dbuser,
  password: config.dbpassword,
  database: config.dbname
});
pool.getConnection((err, connection) => {
  if (err) throw err;
  console.log("Connected!" + connection);

  var s3Params = {
    Bucket: '<your_bucket_name>',
    Key: '<your_key>'
  };
  s3.getObject(s3Params, function(err, result) …
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amazon-web-services amazon-rds node.js aws-lambda

7
推荐指数
1
解决办法
5695
查看次数

从PHP运行长Oracle存储过程

我有一个存储过程,我从PHP运行使用:

//Request does not change
$sql = 'BEGIN SP_GET_MY_DATA(:POP, :SEG, :DUR, :VIEW, :PAGE, :OUTPUT_CUR); END;';            

//Statement does not change
$stmt = oci_parse($conn,$sql);                     
oci_bind_by_name($stmt,':POP',$pop);           
oci_bind_by_name($stmt,':SEG',$seg);           
oci_bind_by_name($stmt,':DUR',$dur);           
oci_bind_by_name($stmt,':VIEW',$view);           
oci_bind_by_name($stmt,':PAGE',$page);    

//But BEFORE statement, Create your cursor
$cursor = oci_new_cursor($conn)

// On your code add the latest parameter to bind the cursor resource to the Oracle argument
oci_bind_by_name($stmt,":OUTPUT_CUR", $cursor,-1,OCI_B_CURSOR);

// Execute the statement as in your first try
oci_execute($stmt);

// and now, execute the cursor
oci_execute($cursor);

// Use OCIFetchinto in the same way as …
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php oracle stored-procedures

6
推荐指数
1
解决办法
403
查看次数