A FULL OUTER JOIN is a type of join operation in PostgreSQL that combines data from two tables while ensuring that all rows from both tables are included in the result set
In PostgreSQL, the uuid data type is used to store 128-bit values that guarantee uniqueness across tables and databases
PostgreSQL's type system includes special entries known as pseudo-types. These aren't data types for storing data in columns
PostgreSQL's data type system includes a category of special types called pseudo-types. These types differ from standard data types in that:
The oid data type represents the raw numeric OID value.They act as primary keys within system tables that store information about these objects
Value Range The range of values an integer can store is from -2,147, 483, 648 to 2,147, 483, 647.Storage Size An integer value uses 4 bytes of storage space in your database
bigint Stores very large whole numbers between -9,223, 372, 036, 854, 775, 808 and 9,223, 372, 036, 854, 775, 807 (8 bytes). Use this for big counters or identifiers
TIMESTAMP (without time zone): This data type stores both date and time information. However, it doesn't consider time zones
Common Choice Because of its balanced storage and value range, integer is the default choice for storing whole numbers in PostgreSQL unless you have a specific reason to use a different data type
Inexactness It's important to note that double precision, like most floating-point data types, is inexact. This means that certain real numbers cannot be stored precisely due to limitations in how computers represent numbers internally