SQL pattern

JSON & Semi-structured

3 problemsin this pattern, climbing easy → medium → hard. Pick wherever you're calibrated. Read the P14 tutorial →

Easy

0 / 1 solved

Which plan each purchase was for
SQL · ~5 min
NEW

Medium

0 / 1 solved

Purchases over 500 from a JSON amount
SQL · ~6 min
NEW

Hard

0 / 1 solved

Coupon: used, explicitly null, or never sent
SQL · ~12 min
NEW