For older version SQLFlow under Windows

This page is for SQLFlow 5.x.x.x

Please refer to the latest install manual if you are using the latest SQFlow(version >


You can check this page for the SQLFlow berfore version

pageSQLFlow before Version 6


  • Server with at least 8GB memory

  • install JDK1.8 SET JAVA_HOME variable, and then add %JAVA_HOME%\bin to the path variable

  • install Nginx for windows Download the Nginx Windows version here:

Unzip SQLFlow file

  • create a folder: c:\wings\sqlflow

  • unzip SQLFlow install package to c:\wings\sqlflow, you will get 2 directories like:

    1. c:\wings\sqlflow\backend

    2. c:\wings\sqlflow\frontend

Start SQLFlow backend

  • Open a dos command windows

  • cd c:\wings\sqlflow\backend\bin

  • run backend.bat

  • please wait 3-5 minutes to allow the SQLFlow service to start completely.

Nginx Reverse Proxy

If we set the reverse proxy path of gspLive restful service to /api

1. config Nginx

  • enter conf directory where Nginx is installed such as Nginx-1.19.4\conf

  • modify the Nginx.conf, replace the server section in nginx.conf with the following code:

	server {

		listen 80 default_server;

		listen [::]:80 default_server;

		root C:\wings\sqlflow\frontend;

		index index.html;
		location ~* ^/index.html {
			add_header X-Frame-Options deny;
			add_header Cache-Control no-store;

		location / {
			try_files $uri $uri/ =404;
		location /api/ {
			proxy_connect_timeout 600s ;
			proxy_read_timeout 600s;
			proxy_send_timeout 600s;
			proxy_set_header Host $host;
			proxy_set_header X-Real-IP $remote_addr;
			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header User-Agent $http_user_agent;  

Please make sure C:\wings\sqlflow\frontend is where the SQLFlow frontend is installed, otherwise, please change C:\wings\sqlflow\frontend to the path where the SQLFlow frontend is located.

2. modify frontend configuration file config.private.json

  • Open the configration file "C:\wings\sqlflow\frontend\config.private.json"

  • Modify the ApiPrefix attribute

  "ApiPrefix": "/api"

start Nginx

  • Open a dos command window

  • cd the directory where Nginx is installed

  • run just nginx.exe

SQLFlow is ready

Open the browser and go to localhost or got to the IP where the SQLFlow is installed.

  • Open http://yourIp/ to see the SQLFlow.

  • Open http://yourIp/api/gspLive_backend/doc.html?lang=en to see the Restful API documention.

Stop the SQLFlow

  • close the window where the backend.bat is running.

  • cd c:\wings\sqlflow\backend\bin

  • run stop.bat

Sqlflow client api call

See sqlflow client api call

  1. Get userId from gudu_sqlflow.conf

  • Open the configration file "c:\wings\sqlflow\backend\conf\gudu_sqlflow.conf"

  • The value of anonymous_user_id field is webapi userId

  • Note: on-promise mode, webapi call doesn't need the token parameter

  1. Test webapi by curl

    • test sql:

      select name from user
    • curl command:

      curl -X POST "http://yourIp/api/gspLive_backend/sqlflow/generation/sqlflow" -H "accept:application/json;charset=utf-8" -F "userId=YOUR USER ID HERE" -F  "dbvendor=dbvoracle" -F "sqltext=select name from user"
    • response:

        "code": 200,
        "data": {
          "dbvendor": "dbvoracle",
          "dbobjs": [
          "relations": [
        "sessionId": ...
    • If the code returns 401, please check the userId is set or the userId is valid.


Hostname error

Make sure the window hostname doesn't include the underscore symbol (_), otherwise, the service will not work properly. please change it to minus symbol (-)

Cannot start

If you have following errors when starting backend.bat

'jps' is not recognized as an internal or external command

Please check the first section of this page, confirm that your JDK environement variable is successfully set. You may need to restart your server to enable the change.

Error uploading large file

This is due to nginx config. Nginx by default limit the size of the files uploaded. Add the following config in your http block of the Nginx config file to change the file upload size in Nginx

client_max_body_size 200m;

This increases the limit to 200M, if needed you may change this number.

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