The expression can be a noncomputed column name, constant, function, variable, and any combination of these connected by one or more operators. The expression can't be a subquery or contain alias data types. Co
The expression can be a noncomputed column name, constant, function, variable, and any combination of these connected by one or more operators. The expression can't be a subquery or contain alias data types. Computed columns can be used in select lists, WHERE clauses, ORDER BY clauses, ...
CREATE TYPE my_type AS TABLE ...;,則 DECLARE @mytablevariable my_type;。 B. 案例:取代全域臨時資料表 使用經記憶體最佳化的 SCHEMA_ONLY 資料表取代全域暫存資料表相當簡單。 最大的變更是在部署階段 (而非執行階段) 建立資料表。 因為編譯時間最佳化,所以建立經記憶...
CREATE[ORALTER]FUNCTION[schema_name. ]function_name( [ { @parameter_name[AS] [type_schema_name. ]parameter_data_type[NULL] [ = default ] [READONLY] } [ , ...n ] ] )RETURNS@return_variableTABLE<table_type_definition>[WITH<function_option>[ , ...n ] ] [AS]BEGINfunction_bodyRETURN...
DATA CHANGE OPERATIONspecial-registersession-variable special-register: 1CURRENT CLIENT_ACCTNGCURRENT CLIENT_APPLNAMECURRENT CLIENT_CORR_TOKENCURRENT CLIENT_USERIDCURRENT CLIENT_WRKSTNNAMECURRENT SERVERCURRENT SQLIDSESSION_USER2 Notes: 1 This definition of special register is specific to this context, as...
SubCreateTableX6()OnErrorResumeNextApplication.CurrentDb.Execute"Drop Table [~~Kitsch'n Sync];"OnErrorGoTo0'This example uses ADODB instead of the DAO shown in the previous'ones because DAO does not support the DECIMAL and GUID data typesDimconAsADODB.ConnectionSetcon = CurrentProject.Connection ...
Unlike the majority of the other data types in SQL Server, you cannot use a table variable as an input or an output parameter. In fact, a table variable is scoped to the stored procedure, batch, or user-defined function just like any local variable you create with a DECLARE statement. ...
ITableVariableCreateTableVariable(stringname, ITableDataType dataType) 参数 name 类型:System. . :: . .String The name of the variable to create. dataType 类型:Microsoft.SqlServer.Management.SqlParser.Metadata. . :: . .ITableDataType
CREATE TABLE PARTITION creates a partitioned table. Partitioned table: refers to splitting what is logically one large table into smaller physical pieces based on specifi
variable-name1 标识全局变量。 全局变量的数据类型将用作 parameter-name 的数据类型。 table-name.column-name 标识现有表或视图的列名。 列的数据类型将用作 parameter-name 的数据类型。 ROW OF table-name 或view-name 根据table-name 标识的表的列名和列数据类型或 view-name标识的视图,指定具有名称和数据类...