如何用SQL将多条记录的某个字段拼接起来
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可以采用以下方法 表名 test1 字段名 1,2 ,3
SELECT
test1.`1` as test1,
test1.`2` as test2,
(select group_concat(test1.`3`) from test1 where test1.`1`= test1.`1`) as test3
FROM
test1
GROUP BY
test1.`1`
SELECT
test1.`1` as test1,
test1.`2` as test2,
(select group_concat(test1.`3`) from test1 where test1.`1`= test1.`1`) as test3
FROM
test1
GROUP BY
test1.`1`
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