Distinct order statuses per customer

For each customer with orders, list their distinct order statuses as one string, alphabetically, separated by a bare comma with no space (","). Ignore NULL statuses. Columns: customer_id, statuses. Sort by customer_id.

Tables & sample data

orders

11 rows total · first 5 shown

order_idvarchar	customer_idvarchar	order_tstimestamp with time zone	statusvarchar	amount_usdbigint
o_001	c_001	2026-05-10 10:00:00	paid	100
o_002	c_001	2026-05-15 11:00:00	paid	200
o_003	c_001	2026-05-20 09:30:00	paid	50
o_004	c_002	2026-05-12 14:20:00	paid	150
o_005	c_002	2026-05-25 08:15:00	paid	75

query.sql

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