SEQUENCE语法如下: (创建一个序列对象并指定其属性) CREATESEQUENCE[schema_name .]sequence_name[AS [ built_in_integer_type | user-defined_integer_type]][START WITH <constant>][INCREMENT BY <constant>][{ MINVALUE [ <constant>]}|{ NO MINVALUE } ][{ MAXVALUE [ <constant>]}|{ NO MAXVALUE...
SEQUENCE语法如下: (创建一个序列对象并指定其属性) CREATESEQUENCE[schema_name .]sequence_name[AS [ built_in_integer_type | user-defined_integer_type]][START WITH <constant>][INCREMENT BY <constant>][{ MINVALUE [ <constant>]}|{ NO MINVALUE } ][{ MAXVALUE [ <constant>]}|{ NO MAXVALUE...
Applies to: SQL Server Azure SQL Database Azure SQL Managed InstanceThis article explains how to use sequence numbers in SQL Server, Azure SQL Database and Azure SQL Managed Instance. A sequence is a user-defined schema-bound object that generates a sequence of numeric values according to the...
Applies to: SQL Server Azure SQL Database Azure SQL Managed InstanceThis article explains how to use sequence numbers in SQL Server, Azure SQL Database and Azure SQL Managed Instance. A sequence is a user-defined schema-bound object that generates a sequence of numeric values according to the...
Transact-SQL 語法慣例 語法 syntaxsql複製 CREATESEQUENCE[schema_name. ]sequence_name[AS[built_in_integer_type| user-defined_integer_type] ] [STARTWITH<constant>] [INCREMENTBY<constant>] [ {MINVALUE[<constant>] } | {NOMINVALUE} ] [ {MAXVALUE[<constant>] } | {NOMAXVALUE} ] [CYCL...
SQL> SELECT my_seq.currval FROM dual; SELECT my_seq.currval FROM dual * ERROR at line 1: ORA-08002: sequence MY_SEQ.CURRVAL is not yet defined in this session --使用nextval列,则成功执行,这就是NEXTVAL 必须在CURRVAL 之前指定,及第一次使用必须是NEXTVAL ...
Simulating Sequence Objects in SQL Server Many applications need sequentially incremental number as unique/primarykey of records.SQL Server 2005 today supports identity column as the primary mean to general sequence number, which generates the sequence number upon the execution of DML (insert) or bulk...
SqlParameter firstValueInRange = new SqlParameter("@range_first_value", SqlDbType.Variant); firstValueInRange.Direction = ParameterDirection.Output; cmd.Parameters.Add(firstValueInRange); conn.Open(); cmd.ExecuteNonQuery(); // Output the first value of the generated range. Console.WriteLine(first...
Initialize(Boolean)Initializes the object and forces the properties be loaded. (繼承自SqlSmoObject。) IsObjectInitializedVerifies whether the object has been initialized. (繼承自SqlSmoObject。) IsObjectInSpaceVerifies whether the object is isolated or connected to the instance of SQL Server. (繼承自...
The JDBC driver supports function escape sequences in SQL statements with the following syntax: SQL {fn functionName} wherefunctionNameis a function supported by the JDBC driver. For example: SQL SELECT{fnUCASE(Name)}FROMEmployee The following table lists the various functions that are supported ...