- PostgreSQL Tutorial
Postgres is a powerful open source database with a rich feature set and some hidden gems in it. Generateseries is a handy utility in Postgres that allows you to generate data starting at some point and ending at another point. Re: setting serial start value. I don't think I am specifying the field correctly. The schema is public, the table is users, the field is id. ALTER SEQUENCE uses the sequence name, not the table name. Alsouse RESTART WITH to set the sequence's current value. Example: test= CREATE TABLE users (id serial PRIMARY KEY.
- Advanced PostgreSQL
- PostgreSQL Interfaces
- PostgreSQL Useful Resources
![Serial Serial](http://crackpluskeygen.org/Content/Images/Screens/MysqlToPostgres_1.png)
- Selected Reading
PostgreSQL has the data types smallserial, serial and bigserial; these are not true types, but merely a notational convenience for creating unique identifier columns. These are similar to AUTO_INCREMENT property supported by some other databases.
If you wish a serial column to have a unique constraint or be a primary key, it must now be specified, just like any other data type.
![Serial data type postgresql Serial data type postgresql](/uploads/1/2/5/8/125845060/970746344.jpg)
The type name serial creates an integer columns. The type name bigserial creates a bigint column. bigserial should be used if you anticipate the use of more than 231 identifiers over the lifetime of the table. The type name smallserial creates a smallint column.
Syntax
The basic usage of SERIAL dataype is as follows −
Example
Consider the COMPANY table to be created as follows −
Now, insert the following records into table COMPANY −
This will insert seven tuples into the table COMPANY and COMPANY will have the following records −