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Safe browser SQL lab

SQL Practice

Practice QA/SDET data checks with simulated users, orders, payments, tickets, and events. No real database or backend is used.

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SQL editor

Read-only simulator. Ctrl/Cmd + Enter runs the query.

qa_sql_sandboxSELECT only

Safe browser trainer. Destructive SQL is blocked. Raw SQL is not sent to analytics.

Query result

Try a suggested query or type your own SELECT.

Dataset preview

Small simulated QA data with intentional problems: duplicates, NULLs, failed payments, missing relationships, and unresolved tickets.

users

idemailname
1ana@example.comAna
2bob@example.comBob
3admin@example.comAdmin

orders

iduser_idstatus
1011paid
1021failed
1032paid

payments

idorder_idprovider
201101stripe
202102stripe
203103paypal

tickets

iduser_idpriority
3011high
3022medium
3034high

events

iduser_idevent_name
4011login
4022login
4031checkout_started