![]() To opt out of this behavior, set the following AppContext switch at the start of your application: AppContext.SetSwitch("Npgsql.DisableDateTimeInfinit圜onversions", true) NET types ( DateTime and DateOnly, NodaTime Instant and LocalDate). Starting with Npgsql 6.0, these special values are mapped to the MinValue and MaxValue value on the corresponding. PostgreSQL supports the special values -infinity and infinity for the timestamp and date types ( see docs) these can be useful to represent a value which is earlier or later than any other value. You can use a DateTimeOffset to read and write values - the date component will be ignored. ![]() Use of the time with time zone type is discouraged, see the PostgreSQL documentation. The precise improvements and breaking changes are detailed in the 6.0 breaking changes to revert to the pre-6.0 behavior, add the following at the start of your application, before any Npgsql operations are invoked: AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true) Prior to 6.0, timestamp with time zone would be converted to a local timestamp when read - see below for more details. Npgsql also supports reading and writing DateTimeOffset to timestamp with time zone, but only with Offset=0. Starting with 6.0, Npgsql maps UTC DateTime to timestamp with time zone, and Local/Unspecified DateTime to timestamp without time zone trying to send a non-UTC DateTime as timestamptz will throw an exception, etc. In PostgreSQL, timestamp with time zone represents a UTC timestamp, while timestamp without time zone represents a local or unspecified time zone. To store a timezone in the database, add a separate text column containing the timezone ID. There is no single PostgreSQL type that stores both a date/time and a timezone, similar to. This is not the case: only a UTC timestamp is stored. Timestamps and timezonesĪ common mistake is for users to think that the PostgreSQL timestamp with time zone type stores the timezone in the database. These are the raw PostgreSQL binary representations of these type, so you'll have to deal with encoding/decoding yourself. In the rare cases where you need to access values outside these ranges, timestamps can be accessed as long, dates as int, and intervals as NpgsqlInterval. NET native types (or the NodaTime types) are more than sufficient. NET type usually have a higher resolution but a lower range than the PostgreSQL types: PostgreSQL typeġ00 nanoseconds, -10,675,199 - 10,675,199 daysġ microsecond, -178000000-178000000 yearsįor almost all applications, the range of the. NET and PostgreSQL types differ in the resolution and range they provide the. It's worth reading the PostgreSQL date/time type documentation to familiarize yourself with PostgreSQL's types.NET types and PostgreSQL types NET types and PostgreSQL represent dates. Handling date and time values usually isn't hard, but you must pay careful attention to differences in how the. The recommended way of working with date/time types is the NodaTime plugin: the NodaTime types are much better-designed, avoid the flaws in the built-in BCL types, and are fully supported by Npgsql.
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