1
我有表所示:从两列选择的数据作为阵列中的一个列进行排序,并在另一列分组
CREATE TABLE IF NOT EXISTS "points" (
"id" INTEGER NOT NULL,
"lat" DOUBLE PRECISION NOT NULL,
"lon" DOUBLE PRECISION NOT NULL
);
INSERT INTO "points" ("id", "lat", "lon") VALUES
(1,51.11,-0.11),
(2,51.12,-0.12),
(3,51.13,-0.13),
(4,51.14,-0.14),
(5,52.44,-2.44),
(6,52.45,-2.45),
(7,52.46,-2.46),
(8,52.47,-2.47);
从两列(lat
,lon
)作为JSON阵列如何选择数据从表排序在一列(id
)? 结果应该是:
[
[51.11,-0.11],[51.12,-0.12],
[51.13,-0.13],[51.14,-0.14],
[44,-2.44],[52.45,-2.45],
[52.46,-2.46],[52.47,-2.47]
]
期望的结果不团。分组意味着什么? –
@ClodoaldoNeto我编辑的问题 - 分组不需要,只有排序。 – HasT