SELECT id, MAX(time_field) AS max_time FROM table_name GROUP BY id HAVING max_time = (SELECT MAX(time_field) FROM table_name)
时间: 2024-06-03 14:12:10 浏览: 2
This SQL query selects the id and the maximum time_field value for each id from the table_name. It then groups the results by id and filters them to only include those where the maximum time_field value is equal to the overall maximum time_field value in the table_name.
This query can be useful when you want to find the id(s) associated with the most recent or latest time_field value(s) in a table.
相关问题
SELECT MAX(zxqz_updatetime) AS maxTime FROM finchina.tcr0008_copy1
根据您提供的查询语句,您想从 `finchina.tcr0008_copy1` 表中选择 `zxqz_updatetime` 列的最大值。
以下是对应的查询语句:
```sql
SELECT MAX(zxqz_updatetime) AS maxTime FROM finchina.tcr0008_copy1;
```
这个查询语句将从 `finchina.tcr0008_copy1` 表中选择 `zxqz_updatetime` 列的最大值,并将其命名为 `maxTime`。请确保您具有足够的权限来执行此查询,并且表 `finchina.tcr0008_copy1` 存在于您的数据库中。
SELECT MAX(zxqz_updatetime) AS maxTime FROM indata.nifi_statistic_tasktime
您的问题是查询 indata 数据库中 nifi_statistic_tasktime 表中 zxqz_updatetime 字段的最大值,可以使用以下 SQL 语句进行查询:
```
SELECT MAX(zxqz_updatetime) AS maxTime FROM indata.nifi_statistic_tasktime;
```
注意:在执行该语句之前,需要先确保已经连接到 indata 数据库。
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