从SqlServer中分配自动增长的表序号（sqlserver表序号）
Generating Table Sequence Numbers Automatically in SqlServer
Running a successful business often requires assigning hundreds of different numbers to each entity that enters the system. Unique ids are required to keep track of various records, invoices, customers, purchases, suppliers, and other documents. This can be quite a daunting task if the business deals with a large number of records coming in each day.
SqlServer provides a solution to generate those unique sequence numbers automatically. Sequential numbers are used for invoice numbers, receipt numbers and other related tasks where recurring numbers need to be created. An auto increment feature would be an ideal solution to do this task.
An auto-increment feature in SqlServer is a column that automatically increases its value with each new record that is inserted into the table. The auto-increment feature of SqlServer allows a user to generate unique identities for each row of data that is added to the table.
Using an unique identity on each row is an excellent option for documents that need to be uniquely identified and tracked. With the auto-increment feature in SqlServer, we can assign a unique identity to each record that is created in the table.
The auto-increment feature can be generated in two ways. The first way to generate a sequential number is to use an Identity column. To do this, you will need to create a table with the ID column declared as an identity column.
The second way to generate automatic numbering with SqlServer is to use a sequence. A sequence is an object in SqlServer that is used to generate sequential numbers. It supports data type like Int, Bigint, Smallint, and Float.
After the sequence is created, we can call the sequence’s next value function to get a new sequence number each time. We can also use the currval function to get the last sequence number generated.
In conclusion, SqlServer provides a great way of automatically generating unique ids for different entities in a business. SqlServer’s auto-increment feature and sequence objects are great solutions for generating unique sequence numbers automatically. This feature can be used in many applications that require unique identifiers or tracking purposes.
