Su, Xiaomeng 76a5b1ee83 dli_sqlreference_20240227

Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Su, Xiaomeng <suxiaomeng1@huawei.com>
Co-committed-by: Su, Xiaomeng <suxiaomeng1@huawei.com>

2024-03-27 22:02:33 +00:00

6.0 KiB

Raw Permalink Blame History

hour

This function is used to return the hour (from 0 to 23) of a specified time.

Syntax

hour(string date)

Parameters

**Table 1** Parameter
Parameter	Mandatory	Type	Description
date	Yes	DATE or STRING	Date that needs to be processed The following formats are supported: yyyy-mm-dd yyyy-mm-dd hh:mi:ss yyyy-mm-dd hh:mi:ss.ff3

Return Values

The return value is of the INT type.

If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
If the value of date is NULL, NULL is returned.

Example Code

The value 10 is returned.

select hour('2023-08-10 10:54:00');

The value 12 is returned.

select hour('12:00:00');

The value NULL is returned.

select hour('20230810105600');