postgresql nextval insert

In-depth interpretation of sequences in PostgreSQL and their related functions, and interpretation of postgresql I. Introduction A sequence object (also called a SEQUENCE generator) is a special single-row table created using create sequence. A

First, Introduction A Sequence object (also called a sequence builder) is a special Single-line table created with the Create SEQUENCE. A sequence object is typically used to generate a unique identifier for a row or table. Second, create a

PureftpdIt is an open source code software that is used on multiple types of Unix and complies with the GPL protocol. The following describes how he and PostgreSQL are used in combination. First, we should know what PostgreSQL is? PostgreSQL is an

I need to use DB2 recently, but I have a lack of understanding about the sequence of DB2. I have found this blog post while searching for a large amount of data. I think it is very detailed, special Collections.     Original blog:

Sequence is a sequence of numbers automatically added by a database system in accordance with certain rules. This sequence is generally used as the surrogate primary key (because it is not duplicated) and has no other meaning.Sequence is the

Detailed description of the PostgreSQL Partition Table (partitioning) application instance, postgresql Partition Table Preface Vertical table sharding is required in the project, that is, data is split into n tables according to the time interval.

MySQL has an excellent syntax createtable... like, which allows you to quickly copy a table and create its copy. PostgreSQL also has similar syntax and is more flexible, but pay attention to some details. Let's take a look at the MySQL Syntax:

PostgreSQL has a wide range of data types available. Users can use the CREATE type command to Add new data types to PostgreSQL. Table 8-1 shows all the built-in common data types. Most of the optional names listed in the aliases column are names

MySQL has a and excellent syntax create TABLE ... like, you can quickly copy a table and create a copy of it. PostgreSQL has a similar syntax and is more flexible, but pay attention to the details.Let's look at MySQL syntax: CREATE TABLE ... likeThe

highgo=# Create sequence T_seq increment by 1 start with 1;   CREATE sequencehighgo=# Select Nextval (' T_seq '); --View the next value in the sequence Nextval---------1 (1 rows of records) highgo= #create table t (id int default nextval (' T_seq ')