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如何在MySQL的BigQuery中提取时间？

2024-04-20 23:11:04 384

extract()与一起使用方法提取cast()。以下是语法-

select extract(minute from cast(yourColumnName as time)) as anyAliasName from yourTableName;

让我们创建一个表-

mysql> create table demo15
−> (
−> value time
−> );

借助insert命令将一些记录插入表中-

mysql> insert into demo15 values('10:30:45');

mysql> insert into demo15 values('06:34:55');

使用select语句显示表中的记录-

mysql> select *from demo15;

这将产生以下输出-

+----------+
| value    |
+----------+
| 10:30:45 |
| 06:34:55 |
+----------+
2 rows in set (0.00 sec)

以下是从时间提取分钟的查询-

mysql> select extract(minute from cast(value as time)) as Minute from demo15;

这将产生以下输出-

+--------+
| Minute |
+--------+
|     30 |
|     34 |
+--------+
2 rows in set (0.00 sec)