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Tags: blog http io ar sp strong data div onSee other people write functions, a start to understand, so on the Internet to find information, the original is a table-valued function, the feeling has learned, full of fulfilling sense, excerpt as follows:Table-Valued functionsThe difference between a table-valued function and a scalar-

In the project, it is necessary to insert about 10W of data from the original file into the database, if the original SQL statement "INSERT into", whether it is a circular insert or BULK INSERT, is not inefficient or the system memory is exhausted, can not meet the demand.Through the online review, found that MSSQL from 2008 onwards, the database supports the table-valued parameters of the bulk insert data, using this method, one-time insertion of 10W

In the company with the cloud platform to do development is trouble, do a lot of functions or some harvest, have no way to write a blog, the result went home to the brain to remember the written out.split () This function is not unfamiliar to us, but the current station has a lot of fields and then randomly tick the parameters passed to the background to do processing, it is troublesome, we need to pass these as strings to the stored procedure, In the stored procedure to separate these strings i

--Use table-valued parameters to bulk insert data into another data tableUse Df17datapro--Create and use table-valued parameter steps/*1. Create a table type and define the table structure.For information about how to create a SQL Server type, see user-defined table types. For more information about how to define the table structure, see CREATE table (Transact-SQL).2. Declare a routine with a table-type par

server| function Use The APPLY operator can call a table-valued function for each row returned by an external table expression that implements a query operation. The table-valued function is the right input, and the outer table expression is left-input. The resulting row is combined as the final output by evaluating the right input for each row in the left input. the list of columns generated by the APPLY o

Label:The following example uses Transact-SQL and demonstrates how to create a table-valued parameter type, declare a variable to reference it, populate the parameter list, and then pass the value to the stored procedure.1 UseAdventureWorks;2 GO3 4 /*creating table-valued parameter types*/5 CREATETYPE Locationtabletype as TABLE 6(LocationNameVARCHAR( -)7, CostrateINT );8 GO9 Ten /*Create a procedure to get

two recommendations:-When using constants, it is best to use constants of the corresponding type. For example, if Table.col is a varchar type, then a query of where Table.col = 10 will not be able to use the index, and an error will occur when it encounters a value in Col that cannot be converted to a number.-unless the implicit conversion of the corresponding value is very intuitive, it is preferred to specify explicit explicit conversions with cast ()/convert ().In the above content, the unde

The first two days insus.net implement a function of "provide read-only data in the database" http://www.cnblogs.com/insus/p/4384411.html, in the database to provide static data for the program.It is implemented in CLR stored procedures. Now you want to use a different way to solve. If providing these static numbers needs to be combined with other data joins, such as the previous stored procedure, some are not very good operation. Then we can implement it in table-

enabled ', 1; Goreconfigure; The go--table-valued function is placed on the Db_study library with the use db_studygo--delete function if object_id (' [dbo].[ Readeventlog] is not nulldrop FUNCTION [dbo]. readeventloggo--removes the assembly if EXISTS (SELECT * from SYS. Assemblies WHERE name= ' Tvfeventlog ') DROP ASSEMBLY tvfeventloggo--CREATE assembly, set to actual path, note should be set to: Unsafecreate ASSEMBLY Tvfeventlog from ' D:\Project\

Label:When we first get started with SQL, we filter to a row with a column value of NULL, typically in the following way: SELECT * from Table as T WHERE t.col=null www.2cto.com and in fact this kind of writing does not have the desired result. The workaround we found online at this time is to use: T.col is NULL. Although this method can get data, but I and some of the peers do not know why the t.col=null can not get a Col null row of this result.Recently I want to strengthen the knowledge of SQL

URL:Http://localhost:8080/WebApi.asmx/GetArrayAsJsonTo add a dataset parameters under the data source, in the Query section, select the [*] node:(iii) design of multi-valued parameters and their default valuesAdd the parameter Empid, and select Multi-value:Optional Values section, add the candidate parameter values, for example: 1/peter, 2/john ... etc., such as:The default Value section, select from query statement, and then select the dataset for t

As the name implies: The table value function returns the table, while the scalar value function can return the base type. Table value functions The user-defined Table value function returns the table data type. For an inline table-valued function, there is no function subject; the table is the result set of a single SELECT statement. The following example creates an inline Table value function. The input parameter of this function is the customer

Create an inline table-valued Function:1 UseTSQLFundamentals2008;2 IF object_id('dbo.fn_getcustorders') is not NULL3 DROP FUNCTIONdbo.fn_getcustorders;4 GO5 CREATE FUNCTIONdbo.fn_getcustorders6(@cid as INT)RETURNS TABLE7 as8 RETURN9 SELECTOrderID, CustID, Empid, OrderDate, RequiredDate,Ten ShippedDate, ShipperID, freight, ShipName, shipaddress, ShipCity , One shipregion, Shippostalcode, ShipCountry A fromsales.orders - WHERECustID= @cid;

JSON multi-valued parameters1.URLNsurl*url = [Nsurlurlwithstring:@ "Http://localhost:8080/MJServer/weather"];//2.Requestnsmutableurlrequest*request = [nsmutableurlrequestRequestwithurl:URL];//3.Request MethodRequest. HttpMethod = @ "POST";//4.Set the request body (Request parameters)nsmutablestring*param = [nsmutablestringstring];[Param appendString:@ "Place=beijing"];[Param appendString:@ "place=tianjin"];[Param appendString:@ "place=meizhou"];Reques