[英]How to separate column data to copy from one table to other table?
I am using pgAdmin. 我正在使用pgAdmin。 I have two tables: STUDENT and STUD.
我有两张桌子:STUDENT和STUD。
STUD consists of a column DATE_TIME where the date and time are joined together. STUD由DATE_TIME列组成,其中日期和时间连接在一起。
STUDENT consists of two columns: DATE and TIME. STUDENT由两列组成:DATE和TIME。
I need to split the DATE_TIME from STUD table so that I can copy the DATE and TIME individually to STUDENT table. 我需要从STUD表中拆分DATE_TIME,这样我就可以将DATE和TIME分别复制到STUDENT表。
How do I do that? 我怎么做?
insert into student (date_col,time_col) select date_time::date, date_time::time from stud;
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