Impala Convert Timestamp To Date

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LAST UPDATED: 09 Nov, 2022 41 PEOPLE USED

【DataPM】Impala里的日期函数简书

最近 Impala 里查数据的时候，发现有很多时间函数不支持，因此，搜集整理了一批常用时间函数，以备查询。 add_months( timestamp date , int months) add_months( timestamp date , bigint months) Return type: timestamp . usage:add_months(now(),1)

https://www.jianshu.com/p/ca0f0ccf793c

Impala Convert Timestamp To Date FAQ

What is timestamp in impala?

In Impala, the TIMESTAMP data type holds a value of date and time. It can be decomposed into year, month, day, hour, minute and seconds fields, but with no time zone information available, it does not correspond to any specific point in time. Internally, the resolution of the time portion of a TIMESTAMP value is in nanoseconds.

What is the use of date function in impala?

Below are the some of the commonly used Impala date functions. Date Function. Description. add_months (timestamp date, int months) Adds month to specified timestamp data types. to_date (timestamp date) Converts timestamp to date data type. now () Returns the current date and time of the system.

How does impimpala convert string literals to timestamps?

Impala automatically converts STRING literals of the correct format into TIMESTAMP values. Timestamp values are accepted in the format 'yyyy‑MM‑dd HH:mm:ss.SSSSSS', and can consist of just the date, or just the time, with or without the fractional second portion.

What are the date and time functions supported by impimpala?

Impala supports the following date and time functions: Purpose: Adds months to date and returns the new date value. If date is TIMESTAMP, returns TIMESTAMP . If date is DATE, returns DATE . Same as MONTHS_ADD () .