Table Relationships — ER Diagram

Click a table to highlight its relationships

Primary Key Foreign Key — 1:Many relationship   ═ Many:Many
Click a table to highlight its relationships and see details.

JOIN Visualizer

See which rows match across tables for each JOIN type

Employees (left)

Departments (right)

Result Set

Visual Query Builder

Build a SQL query visually — see the generated SQL and simulated results

Build Query

SELECT columns:

Generated SQL

Results

Index Performance

Watch the difference between a full table scan and an indexed lookup

Scan progress:
Full scan: 0 rows read
Index: 0 hops

Table preview (first 20 rows)