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DoltHub
This is how we run Data Bounties to pay the community for their data collection work.

dolt/quickstart.md at main · dolthub/dolt
GitHub
Here’s our dolt org.
There's some great video tutorial content for using DoltHub if you learn best that way.
Anyone can create a Pull Request to be merged into the database via the SQL UI at DoltHub, SQL editor integration, command line, or Python.

Supported statements are limited, so dolt is not great for managing a bunch of schemas.
Spreadsheets
Dolt has a guide here for spreadsheets generally, including ODBC setup. Using the CLI, first ensure you’ve initialized the repo you’d like to pull from. Export a table like this:
dolt table export source_types > source_types.csv
dolt table export <table_name> > <file_name>
Add new files
dolt table import -c --pk <primary_key> <table_name> <file_name>
dolt table import -c --pk name format_types format_types.csv
Use dolt add . to start tracking all new files in the directory.

Dolt's documentation on this is here.
There are two ways to run the dolt server with multiple databases served in one instance, in which you can use use db_name to switch databases.

dolt sql-server -H 0.0.0.0 -P 3306 -u root -p root123 --multi-db-dir /path_to_dir_that_hosts_multi_repos/

Create a config file, example.cnf:
log_level: info
behavior:
read_only: false
autocommit: true
user:
name: root
password: "root123"
listener:
host: 0.0.0.0
port: 3306
max_connections: 10
read_timeout_millis: 28800000
write_timeout_millis: 28800000
databases:
- name: richardji_datasets
path: /home/oracle/work/pdap/dolt/richardji_datasets
- name: rji_test
path: /home/oracle/work/pdap/dolt/rji_test
performance:
query_parallelism: null
Then run it with:
dolt sql-server --config my2.cnf
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Getting Started with Dolthub
Useful statements
Run two Dolt repos with sql-server
Method 1
Method 2