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Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. NEXT VALUE FOR (Transact-SQL)
In this articleApplies to: SQL Server (all supported versions) Azure SQL Database Azure SQL Managed InstanceGenerates a sequence number from the specified sequence object. For a complete discussion of both creating and using sequences, see Sequence Numbers. Use sp_sequence_get_range to generate reserve a range of sequence numbers. Transact-SQL Syntax ConventionsSyntax
Argumentsdatabase_name schema_name sequence_name over_order_by_clause Return TypesReturns a number using the type of the sequence. RemarksThe NEXT VALUE FOR function can be used in stored procedures and triggers. When the NEXT VALUE FOR function is used in a query or default constraint, if the same sequence object is used more than once, or if the same sequence object is used both in the statement supplying the values, and in a default constraint being executed, the same value will be returned for all columns referencing the same sequence within a row in the result set. The NEXT VALUE FOR function is nondeterministic, and is only allowed in contexts where the number of generated sequence values is well defined. Below is the definition of how many values will be used for each referenced sequence object in a given statement:
Limitations and RestrictionsThe NEXT VALUE FOR function cannot be used in the following situations:
Using a Sequence Object in a Default ConstraintWhen using the NEXT VALUE FOR function in a default constraint, the following rules apply:
Using a Sequence Object with an OVER ORDER BY ClauseThe NEXT VALUE FOR function supports generating sorted sequence values by applying the OVER clause to the NEXT VALUE FOR call. By using the OVER clause, a user is guaranteed that the values being returned are generated in the order of the OVER clause's ORDER BY subclause. The following additional rules apply when using the NEXT VALUE FOR function with the OVER clause:
For information about sequences, query the sys.sequences catalog view. SecurityPermissionsRequires UPDATE permission on the sequence object or the schema of the sequence. For an example of granting permission, see example F later in this topic. Ownership ChainingSequence objects support ownership chaining. If the sequence object has the same owner as the calling stored procedure, trigger, or table (having a sequence object as a default constraint), no permission check is required on the sequence object. If the sequence object is not owned by the same user as the calling stored procedure, trigger, or table, a permission check is required on the sequence object. When the NEXT VALUE FOR function is used as a default value in a table, users require both INSERT permission on the table, and UPDATE permission on the sequence object, to insert data using the default.
AuditTo audit the NEXT VALUE FOR function, monitor the SCHEMA_OBJECT_ACCESS_GROUP. ExamplesFor examples of both creating sequences and using the NEXT VALUE FOR function to generate sequence numbers, see Sequence Numbers. The following examples use a sequence named
A. Using a sequence in a select statementThe following example creates a sequence named
Here is the result set.
B. Setting a variable to the next sequence valueThe following example demonstrates three ways to set a variable to the next value of a sequence number.
C. Using a sequence with a ranking window function
D. Using the NEXT VALUE FOR function in the definition of a default constraintUsing the NEXT VALUE FOR function in the definition of a default constraint is supported. For an example of using NEXT VALUE FOR in a
CREATE TABLE statement, see Example CSequence Numbers. The following example uses
E. Using the NEXT VALUE FOR function in an INSERT statementThe following example
creates a table named
E. Using the NEXT VALUE FOR function with SELECT ... INTOThe following example uses the
F. Granting permission to execute NEXT VALUE FORThe following example
grants UPDATE permission to a user named
See AlsoCREATE SEQUENCE (Transact-SQL)
Additional resourcesAdditional resourcesIn this articleWhat are the 6 steps to designing a statistical study?Step 1: Write your hypotheses and plan your research design. ... . Step 2: Collect data from a sample. ... . Step 3: Summarize your data with descriptive statistics. ... . Step 4: Test hypotheses or make estimates with inferential statistics. ... . Step 5: Interpret your results.. What are statistics used for quizlet?Statistics is the science of collecting, organizing, summarizing and analyzing information to draw conclusions or answer questions.
Which of the following are examples of descriptive statistics?The three main types of descriptive statistics are frequency distribution, central tendency, and variability of a data set. The frequency distribution records how often data occurs, central tendency records the data's center point of distribution, and variability of a data set records its degree of dispersion.
What is the goal of learning statistics quizlet?What is the goal of learning statistics? To learn to distinguish between statistical conclusions that are likely to be valid and those that are seriously flawed.
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