1
我使用json_agg Postgres裏這樣Postgres的json_agg限制
json_agg((e."name",e."someOtherColum",e."createdAt") order by e."createdAt" DESC)
但我想限制多少行將會被聚合到JSON。我想寫這樣的東西
json_agg((e."name",e."someOtherColum",e."createdAt") order by e."createdAt" DESC LIMIT 3)
是否有可能以某種方式?
這是完整的查詢
SELECT e."departmentId",
json_agg((e."name",e."someOtherColum",e."createdAt") order by e."createdAt" DESC) as "employeeJSON"
FROM "Employee" e
GROUP BY e."departmentId"
所以我想實現與前三個員工爲每個部門的部門。