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What does sql timestamp mean

Daniel James Reed

Apr 09, 2025 pm 05:18 PM

SQL TIMESTAMP is a data type that stores timestamps with time zone offsets. It stores the number of seconds since the Unix time origin, with an optional additional microsecond value. Its advantages include high precision, time zone awareness and automatic time zone conversion.

What does sql timestamp mean

What is SQL TIMESTAMP?

SQL TIMESTAMP is a data type that stores timestamps with time zone offsets. It represents the number of seconds since the Unix time origin (midnight on January 1, 1970 UTI), and optionally has the option of additional microsecond values.

Advantages of TIMESTAMP

High precision: TIMESTAMP can store timestamps accurate to microseconds, which is critical for applications that require precise time recording.
Time Zone Awareness: TIMESTAMP saves time zone offsets, which is useful for processing data across time zones.
Automatic time zone conversion: TIMESTAMP automatically converts between different time zones, so that упрощает приложени works.

How to use TIMESTAMP

In SQL, you can use the following syntax to create a TIMESTAMP column:

 <code>CREATE TABLE table_name ( timestamp_column TIMESTAMP );</code>

Values can be inserted into the TIMESTAMP column using the following format:

 <code>INSERT INTO table_name (timestamp_column) VALUES ('YYYY-MM-DD HH:MM:SS[.fffffffff]');</code>

For example:

 <code>INSERT INTO table_name (timestamp_column) VALUES ('2023-07-19 16:30:15.123456');</code>

Compare with other time types

There are other time-related data types in SQL, such as DATE and TIME. Here are the main differences between these types:

DATE: Only the date is stored, not the time information.
TIME: Only store time information, not date information.
TIMESTAMP: Stores date and time information, as well as time zone offset.

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