sql server fuzzy string comparison

SQL Server supports two character data types---general and Unicode, and general types include char and varchar;unicode including nchar and nvarchar. Each character in the general occupies one byte of storage, while the Unicode data type consumes 2 bytes per character and requires 4 bytes for a surrogate pair. If you select a regular character type for a column, you will be restricted to use only one languag

SQL statement Copy Code code as follows: Reverse (substring reverse (path), 1,charindex ('/', reverse (path))-1) How SQL takes out the character to the right of the last special character in a string, for example: 10*20*300, how do I get 300? Use reverse with charindex to achieve. Reverse is to invert the

syscolumns A,syscolumns bGO--string spin-off processing functionCREATE FUNCTION F_splitstr (@s varchar (8000),--string to be split@split varchar (10)--Data delimiter) RETURNS TABLEAsRETURN (SELECT Col=cast (SUBSTRING (@s,id,charindex (@split, @[email protected],id)-id) as varchar (100))From Tb_splitstrWHERE Idand CHARINDEX (@split, @[email protected],id) =id)GO --Method 4: Use

SQL Server String splitting implementation statement. For details, refer. SQL Server String splitting implementation statement. For details, refer. The Code is as follows: --> Title: generate a sequence number. --> Author: wuf

variable length.Vi. How do I use these types?If you are sure of the length of the stored data and do not pack in Chinese, you can choose the char type. If you are sure of the stored data length, but may include Chinese, you can choose the nchar type. If you are unsure of the length of the stored data, store only English, the best use of the number varchar If you are unsure of the length of the stored data, it is possible to have Chinese, you can choose the nvarchar type, and in

Tags: http technology present tar comma Ace SEL Reference codeToday to change to the old man's code, actually put multiple IDs in a column, or use the comma partition ... What do you do when you inquire???Search the internet for half a day, finally found a SQL Server inside there is a parsename function, you can press. (dot) to split the string,So I wrote down th

Tags: style blog color io os using AR data sp Reference namespaces 1 using System.Data; 2 using System.Data.SqlClient; Connection string 1 //A single instance exists in the Windows Authentication Mode database2 stringConnectionString ="Data source=localhost;initial catalog=northwind;integrated security=sspi;"3 //multiple instances exist in Windows Authentication Mode database4 stringConnectionStr

OneSQL Server Date-time functionsDate and time functions in SQL Server1. Current system date, timeSelectGetDate()2.DateAddOn the basis of adding a period of time to the specified date, return the newDatetimeValueExample: Add 2 days to the dateSelectDateAdd(Day,2,‘2004-10-15‘)--return: 2004-10-17 00:00:00.0003.DateDiffReturns the number of date and time boundaries across two specified dates.SelectDateDiff(Da

Tags: http string server haha and I clicked on GPO Excel format togetherSQL Server copies the data into Excel format into a string, and the result data is stored in the first lattice.I clicked along with the title copy, and then pasted it into Excel, the result is this ....This is not the result I want, in the online q

SQL statement Copy codeThe Code is as follows: reverse (substring (reverse (Path), 1, charindex ('/', reverse (Path)-1 )) How can I retrieve the right character of the last special character in a string, for example, 10*20*300? How can I get 300? Use reverse with charindex. Reverse is to put the string upside down, and then use charindex to obtain the first *

Copy Code code as follows: Use [database name]; --1. Define the keywords you want to find. In search, use fuzzy search: like '% @key_find% ' DECLARE @key_find NVARCHAR (MAX) = ' 123 ';--suppose to find the string "123" --2. Cursor_table with a cursor, traversing all tables DECLARE cursor_table Cursor for SELECT name from sysobjects WHERE xtype = ' u ' and name OPEN cursor_table; DECLARE @tabl

This method mainly describes how to remove data from the SQL Server database without using Dataset. Compared with the former, this method reduces the amount of code required for retrieval from the database.1. Contact code: 1: using System.Xml.Serialization; 2: 3: /// 4: /// Summary description for Contact 5: /// 6: /// 7: [XmlRoot("Contacts")] 8: public class Contact 9

Specific ways to split string functions in a SQL Server database: CREATE FUNCTION uf_strsplit ' 1.1.2.50 ', '. '(@origStr varchar (7000),--the string to be split@markStr varchar (100))--split mark, such as ', 'RETURNS @splittable Table(STR_ID varchar (4000) not NULL,--numbered IDString varchar not NULL--split strings)

F_splitstr (@s varchar (8000),--string to be split@split varchar (10)--Data delimiter) RETURNS TABLEAsRETURN (SELECT Col=cast (SUBSTRING (@s,id,charindex (@split, @[email protected],id)-id) as varchar (100))From Tb_splitstrWHERE Idand CHARINDEX (@split, @[email protected],id) =id)GO --Method 4: Use SQL server2005 outer APPLY CREATE FUNCTION [dbo]. [Ufn_splitstringtotable](@str VARCHAR (MAX),@split VARCHAR

Tags: win manage connect tag string source Initial character Config //Windows authentication 1//string Strcon = @ "Data source=.\sqlexpress;initial catalog=db1;integrated security=true; Pooling=false "; //Windows Authentication 2//string Strcon = @ "server=.\sqlexpress;database=db1;integrated s

CONVERT (varchar), GETDATE (), 126): 2006-05-16t10:57:49.827Select CONVERT (varchar), GETDATE (), ():???? ?????? 1427 10:57:49:907amSelect CONVERT (varchar), GETDATE (), 131): 18/04/1427 10:57:49:920am2. SQL Server date and time functions1. Current system date, timeSelect GETDATE ()2. DateAdd returns a new datetime value based on adding a period of time to the specified dateExample: Add 2 days to the dateS

Tags: margin tab style weight code IDT height ble class Name Seafood Products Fruit and vegetables Sea cucumber Meat and eggs Steak Preserved meat Fresh food Turn the above column into a: Fresh food, seafood, fruits and vegetables, sea cucumber, steak, meat and eggs, preserved meats Sql Select CAST as varchar) + ' , '

)--Data delimiter) RETURNS TABLEAsRETURN (SELECT Col=cast (SUBSTRING (@s,id,charindex (@split, @[email protected],id)-id) as varchar (100))From Tb_splitstrWHERE Idand CHARINDEX (@split, @[email protected],id) =id)GO--Method 4: Use SQL server2005 outer APPLYCREATE FUNCTION [dbo]. [Ufn_splitstringtotable](@str VARCHAR (MAX),@split VARCHAR (10))RETURNS TABLEAsRETURN(SELECT b.idFrom (SELECT [value] = CONVERT (XML, ' + ' ) AOUTER APPLY (SELECT id = n.v.val

Tags: logs convert weight made with int span app DivSQL Server Profiler caught a lot of code in the job, applicationname similar to Sqlagent-tsql JobStep (Job 0x94b9b5c016e8d94fb50898c868314d08:st EP 1) Such a Need to convert the binary name in the job into job_id The conversion is done in the following ways: Declare @JobID uniqueidentifier SELECT @JobID = 0x94b9b5c016e8d94fb50898c868314d08 PRINT 'My JobID is' + Convert(Char(255),@JobID) Select *

How SQL Server, MySQL gets the connection stringSteps:First, create a new text document Xxx.txt, modify the file type to. udlSecond, open the document, in the "provide data" to find the corresponding services.Third, select the required database in the connection and fill in the relevant information.Iv. Test Connection, if successful then skip to the next step, failure is the user information error, re-modif