如何在PostgreSQL查询中添加LIMIT子句？

Question

我想在PostgreSQL查询中添加LIMIT子句，但它给我错误

SELECT complaint_id FROM complaint_details_v2 a where a.road_dept SIMILAR TO 'PWDBnR' order by a.server_time desc LIMIT 0, 10

以下是错误：

ERROR: LIMIT #,# syntax is not supported
SQL state: 42601
Hint: Use separate LIMIT and OFFSET clauses.
Character: 87

Answer 1

对于上面的示例-跳过“ 0”位

SELECT complaint_id FROM complaint_details_v2 a where a.road_dept SIMILAR TO 
'PWDBnR' order by a.server_time desc LIMIT 10

LIMIT 0、10不是postgres方言，请使用OFFSET。例如，如果要下10个结果：

SELECT complaint_id FROM complaint_details_v2 a where a.road_dept SIMILAR TO 
'PWDBnR' order by a.server_time desc OFFSET 10 LIMIT 10

http://www.sqlines.com/postgresql/limit_offset

Answer 2

查询应用于选择前10行

SELECT complaint_id FROM complaint_details_v2 a where a.road_dept SIMILAR TO 'PWDBnR' order by a.server_time desc LIMIT 10

如果要在y条记录之后选择x行（从0开始计数），则应使用

SELECT complaint_id FROM complaint_details_v2 a where a.road_dept SIMILAR TO 'PWDBnR' order by a.server_time desc LIMIT x OFFSET y

希望这会有所帮助！