fastexcel | 快速简单读取excel数据
kandi X-RAY | fastexcel Summary
kandi X-RAY | fastexcel Summary
fastexcel
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Top functions reviewed by kandi - BETA
- Load raw data from Excel sheet
- Gets the cell value
- Checks the row and cell number
- Create Excel file
- Creates the Excel workbook
- Close the workbook
fastexcel Key Features
fastexcel Examples and Code Snippets
Community Discussions
Trending Discussions on fastexcel
QUESTION
I am trying to convert CSV to Excel with Apache POI by using SXSSFWorkbook.
My CSV file has about 230,000 records and 50 columns. Total processing time for both read and write processes around 1 minute.
I am looking around to solve my performance issue to get lower times (max. 30 sec) since the connection time out occurs after 30 sec. from gateway.
What am I doing wrong? Is there anything I could change?
...ANSWER
Answered 2021-Nov-14 at 16:37There is no problem with the way you write to Excel. Time is mainly wasted on the method of reading CSV. In addition, fastexcel is the best choice I tested, it is faster than others( SXSSFWorkBook ,easyexcel and myexcel).The following code hopes to be useful to you.
QUESTION
I m uploading an excel file, which contains User data with their products status (0,1).
I want to do save the product data in Productsale table first, with user_id, product_id,target_month, and status.
then I get all users and then get product and its status from productsale table and count it and save its result in Saleproduct table.
I have 33000 rows in the excel file and saving 300k in productsale, boz everyuser have 8 products,
here is my code
...ANSWER
Answered 2021-Nov-14 at 06:55If it takes too long to run (and presumably results in an error being returned) then don't do it synchronously - ie. whilst the user is waiting - but to it asynchronously.
Your controller should just be concerned with validating the file, saving it into storage, and returning the success code to the user to tell them that the file has been uploaded, and will be processed shortly.
Then move all the code about the processing of the file into a job, which the controller dispatches, which runs in the background. Ideally this would be on a queue (in which case look at your queue settings, as the default is 30 seconds for the job to finish there, which lines up with the PHP settings you are probably falling foul of already, so be prepared to allow a longer time for the job to execute).
QUESTION
I am using FastExcel in Lumen for importing data from excel sheet to database.
...ANSWER
Answered 2020-Aug-12 at 03:39Currently, there is no way to get the sheet name(names). The PHP library does not support it.
If you want to import a specific sheet, there is no native way to do it. You may try some of the options down below.
- You know the sheet number.
QUESTION
I have a worksheet with many array formulas referencing another small source data sheet with a couple of rows. Formulas are as follows:
...ANSWER
Answered 2020-May-31 at 08:20Not sure if you are building this through VBA but if it's just formulas you are using you could try something like:
QUESTION
I have three UDF's:
...ANSWER
Answered 2020-May-30 at 08:37You should be able to prevent unnecessary additional calculations by including
QUESTION
I am trying to export data to excel using Fast excel. This is easy for straight forward export. However, I have data as follows:
...ANSWER
Answered 2020-Jan-21 at 14:18public function exportTest() {
$reviews = DB::table('test_db')->orderBy('name')->get();
$file_name = 'Review - '.date('Y_m_d').'.xlsx';
return (new FastExcel($reviews))->download($file_name,function($reviews) {
foreach ($reviews as $review) {
# code...
if(!empty($review->multiple_units)) {
$unit_ids = json_decode($review->multiple_units, true);
foreach($unit_ids as $uk => $uv){
return [
'Name' => $review->name,
'Units' => $uv
];
}
}
}
});
}
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install fastexcel
You can use fastexcel like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the fastexcel component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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