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PostgreSQL since version 7.2, released 2002-02-04, stores timestamp WITHOUT TIMEZONE as 64-bit. [31] [failed verification] Prior versions already stored timestamp as 64-bit. [citation needed] As of MySQL 8.0.28, released in January 2022, the functions FROM_UNIXTIME(), UNIX_TIMESTAMP(), and CONVERT_TZ() handle 64-bit values on platforms that ...
Date/time (timestamp/time with/without time zone, date, interval) Money; Enum; Bit strings; Text search type; Composite; HStore, an extension enabled key-value store within PostgreSQL [44] Arrays (variable-length and can be of any data type, including text and composite types) up to 1 GB in total storage size; Geometric primitives; IPv4 and ...
TIME: for time values (e.g. 15:51:36). TIME WITH TIME ZONE: the same as TIME, but including details about the time zone in question. TIMESTAMP: This is a DATE and a TIME put together in one variable (e.g. 2011-05-03 15:51:36.123456). TIMESTAMP WITH TIME ZONE: the same as TIMESTAMP, but including details about the time zone in question.
DATE, TIME, TIMESTAMP (without time zone) BOOLEAN: TIMESTAMP, CHAR (38), User defined types (Domains) Type system Integer Floating point Decimal String Binary Date/Time Boolean Other HSQLDB [158] Static TINYINT (8-bit), SMALLINT (16-bit), INTEGER (32-bit), BIGINT (64-bit) DOUBLE (64-bit) DECIMAL, NUMERIC: CHAR, VARCHAR, LONGVARCHAR, CLOB ...
Xinjiang Time Canonical +06:00 +06:00 +06 asia The Asia/Urumqi entry in the tz database reflected the use of Xinjiang Time by part of the local population. Consider using Asia/Shanghai for Beijing Time if that is preferred. RU: Asia/Ust-Nera: MSK+07 - Oymyakonsky Canonical +10:00 +10:00 +10 europe LA: Asia/Vientiane: Link † +07:00 +07:00 +07 ...
The term "timestamp" derives from rubber stamps used in offices to stamp the current date, and sometimes time, in ink on paper documents, to record when the document was received. Common examples of this type of timestamp are a postmark on a letter or the "in" and "out" times on a time card .
Valid time is the time period during or event time at which a fact is true in the real world. Transaction time is the time at which a fact was recorded in the database. Decision time is the time at which the decision was made about the fact. Used to keep a history of decisions about valid times.
In this case, if the transaction's timestamp is after the object's read timestamp, the read timestamp is set to the transaction's timestamp. If a transaction wants to write to an object, but the transaction started before the object's read timestamp it means that something has had a look at the object, and we assume it took a copy of the object ...