SQL postgresql 中 mmm yyyy 格式的日期
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Date in mmm yyyy format in postgresql
提问by Deepak Kumar
I have a table with a column of type timestamp without time zone.
我有一个没有时区的时间戳类型列的表。
I want to select that column with the mmm yyyy
format – for example, “Mar 2011”. How to format it that way? I tried:
我想用mmm yyyy
格式选择该列- 例如,“2011 年 3 月”。如何以这种方式格式化?我试过:
select cast(now() as date)
but it is giving me the incorrect format.
但它给了我不正确的格式。
回答by Mohamed Saligh
SELECT TO_CHAR(NOW(), 'Mon YYYY');
SELECT TO_CHAR(NOW(), 'Mon YYYY');
回答by Ram Pukar
回答by Yavor Shahpasov
You need to use a date formatting function for example to_char http://www.postgresql.org/docs/current/static/functions-formatting.html
您需要使用日期格式功能,例如 to_char http://www.postgresql.org/docs/current/static/functions-formatting.html
回答by Rohit Sonawane
You can write your select query as,
您可以将选择查询编写为,
select * from table_name where to_char(date_time_column, 'YYYY-MM') = '2011-03';
回答by Elmira Behzad
I think in Postgres you can play with formats for example if you want dd/mm/yyyy
我认为在 Postgres 中,如果你愿意,你可以使用格式 dd/mm/yyyy
TO_CHAR(submit_time, 'DD/MM/YYYY') as submit_date