planetstar.blogg.se - Ebean version column postgresql timestamp

EBEAN VERSION COLUMN POSTGRESQL TIMESTAMP FULL

Neither TIMESTAMP variants store a time zone (or an offset), despite what the names suggest. I try to explain it more understandably than the referred PostgreSQL documentation. Here are examples covering the combinations of those factors: foo=> SET TIMEZONE TO 'Japan' įoo=> SELECT ' 00:00:00'::TIMESTAMP WITH TIME ZONE įoo=> SELECT ' 00:00:00+03'::TIMESTAMP WITH TIME ZONE įoo=> SET TIMEZONE TO 'Australia/Melbourne'

Whether the value is specified with a particular time zone.

WITH TIME ZONE or WITHOUT TIME ZONE) of the value. The behaviour differs depending on at least three factors: Without a time zone as part of the value, the obvious default time zone is UTC, so it is rendered for that time zone. With a time zone as part of the value, the value can be rendered as a local time in the client. The difference arises from what the system can reasonably know about the value: The effects of time zones on these data types is covered specifically in the docs. It doesn't affect how the values are stored it affects how they are interpreted. Yes, the treatment of TIME or TIMESTAMP differs between one WITH TIME ZONE or WITHOUT TIME ZONE. It fails on the Last line with the following error: SQL Error : ERROR: duplicate key value violates unique constraint "UserFavorites_Partition_2020_pkey"ĭetail: Key ("CreationDate")=( 09:38:54.997) already exists.ĮRROR: duplicate key value violates unique constraint "UserFavorites_Partition_2020_pkey"The differences are covered at the PostgreSQL documentation for date/time types. Insert into "UserFavorites" ("Id", "UserId", "CardId", "CreationDate") select * from "UserFavorites_old"

Perform createPartitionIfNotExists(to_date(rec::varchar,'yyyy')) Ĭreate or replace view "UserFavorites" as select * from "UserFavorites_master" execute format('create unique index on %I (%I)', tableName, 'UserId'::text) Unfortunatelly Postgres forces us to define index for each table individually:

EBEAN VERSION COLUMN POSTGRESQL TIMESTAMP FULL

You can see the full code below: alter table "UserFavorites" rename to "UserFavorites_old" Ĭreate or replace function createPartitionIfNotExists(forDate timestamp) returns voidĭeclare yearStart date := date_trunc('year', forDate) ĭeclare yearEndExclusive date := yearStart + interval '1 year' ĭeclare tableName text := 'UserFavorites_Partition_' || to_char(forDate, 'YYYY') Įxecute format('create table %I partition of "UserFavorites_master" for values from (%L) to (%L)', tableName, yearStart, yearEndExclusive) Looking for alternatives or good ideas to solve the issue.

The original table didn't have a constraint on timestamp to either be unique or a primary key nor would we particularly want that but that seems to be a requirement of partitioning. "Id" int4 NOT NULL GENERATED BY DEFAULT AS IDENTITY,ĬONSTRAINT "PK_UserFavorites_CreationDate" PRIMARY KEY ("CreationDate") You can see the new table definition below: CREATE TABLE "UserFavorites_master" ( The partition forces me to create the primary to be the range (timestamp) value.

I have an issue when trying to modify and existing PostgreSQL (version 13.3) table to support partitioning it gets stuck when inserting the new data from the old table because the inserted timestamp in some cases may not be unique, so it fails on execution.