От Postgres 12 , официалният списък с ограничения може да бъде намерен в ръководството :
Item Upper Limit Comment
---------------------------------------------------------
database size unlimited
number of databases 4,294,950,911
relations per database 1,431,650,303
relation size 32 TB with the default BLCKSZ of 8192 bytes
rows per table limited by the number of
tuples that can fit onto 4,294,967,295 pages
columns per table 1600 further limited by tuple size fitting on a single page; see note below
field size 1 GB
identifier length 63 bytes can be increased by recompiling PostgreSQL
indexes per table unlimited constrained by maximum relations per database
columns per index 32 can be increased by recompiling PostgreSQL
partition keys 32 can be increased by recompiling PostgreSQL Преди това имаше официален списък на страницата „Относно“ на PostgresL . Оферта за Postgres 9.5 :
Limit Value
Maximum Database Size Unlimited
Maximum Table Size 32 TB
Maximum Row Size 1.6 TB
Maximum Field Size 1 GB
Maximum Rows per Table Unlimited
Maximum Columns per Table 250 - 1600 depending on column types
Maximum Indexes per Table Unlimited
Ако се доближите някъде до тези граници, има вероятност да правите нещо грешно .
