sql expression builder

Document directory Example1: case insensitive and replaced Example2: Use greedy match Example3: Remove HTML tags Example4: database Field Value Replacement Replace SQL regular expressions with comments from January 1,-by keepfool1 Now there is a small scenario where a field in a table in the database stores HTML code. If you need to replace all the Of course we can do this in C: Regex regex = new Regex(@" However, I don't want to write another

Tags: regular expression sql MySQLHere's a brief look at MySQL's use of regular expressions when filtering data, primarily for each usage, or to add a few short notes.This is to say in advance that using regular expressions to filter the data is using the REGEXP keywordBasic character Matching:SELECT Prod_name from Products WHERE prod_name REGEXP ' 1000 ';The query statement means that the Prod_name field c

I didn't run my blog for half a year. I was not very diligent, I started my own business, and I didn't have time to come. But in this small project, I used LINQ to SQL. In this case, I must search for multiple combinations of conditions. Although I have only a few research on the Expression Tree, it seems that there is no other way to study it. This article is suitable for small data volumes. For large data

. Creating scalar functions that support regular checks--drop FUNCTION [dbo]. [Regexismatch] CREATE FUNCTION [dbo]. [Regexismatch] (@Regex [nvarchar] (max), @Input [nvarchar] (max)) RETURNS [Bit] with EXECUTE as CALLER as EXTERNAL NAME [assemblyregex].[ Mssqlregexextend.regexextend]. [IsMatch] Simple regular in the attached section:/*. Match any character except a newline \w match a letter or number or an underscore or a Chinese character \s match any white space character \d match a numb

Case BriefA column-based logical expression is actually a case expression. Can be used after Select,update,delete,set and in,where,order by and having clauses. Since this is a T-SQL query, only the case expression is used in the SELECT clause and the ORDER BY clause.The action of the case

Code is as follows: Create assembly [RegExCLR] FROM 'regexclr. dll '; -- Add the REGEX function. We want a friendly name -- RegExMatch rather than the full namespace name. -- Note the way we have to specify the Assembly. Namespace. Class. Function -- NOTE the RegExCLR. RegExCLR -- (One is the assembly the other is the namespace) Create function RegExMatch (@ inputCalue NVARCHAR (4000 ), @ RegexPattern NVARCHAR (4000) RETURNS BIT As external name RegExCLR. RegExCLR. ClrClass. RegExMatch; OK,

An expression ;( 3 ) where Column Name comparison operator Column Name ;Oracle provides examples of the following commonly used comparison operators:(1) >(2) (3) =(4) (5) >=(6) (7) between ... and ...(8) in(9) Like? Example 8: Use the WHERE clause to filter out student information with a name of 3 characters in the student table.Solution: Query Student Table all dataWatermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqv/font/5a6l5l2t/fontsize/400/fill/i0jbqkf

be discussed, return can Return } Conditions=getmatchedstring (Regex,sql); } /** * Parse the GroupBy field * */ private void Parsegroupcols () { String regex= ""; if (Iscontains (SQL, "Group\\s+by")) { Include GroupBy, with grouped fields if (Iscontains (SQL, "Order\\s+by")) { Group BY IS followed by Regex= "(Group\\s+by) (. +) (order\\s+by)"; }

Tags: join outer store BSP using code com URL wwwImplementing a LEFT join using a lambda expression in LINQ to SQL and the Entity frameworkWe know that lambda expressions use the Join function in LINQ to SQL and the Entity framework to implement inner joins, so how can you implement a LEFT join in a lambda expression?

-- SQL Regular Expression replacement functionCopy codeThe Code is as follows:CREATE function dbo. regexReplace(@ Source ntext, -- original string@ Regexp varchar (1000), -- Regular Expression@ Replace varchar (1000), -- replace value@ GlobalReplace bit = 1, -- whether it is a global replacement@ IgnoreCase bit = 0 -- ignore case sensitivity)ReturnS varchar (1000

other parts are odd members. Replace even-numbered members? Yes, you can. The code is as follows import reSQL= R"SELECT * from a where id= ' aaaaa haha wocao ' and id1= ' FFF ' and Xx=1 and a3= 4 and a4=3434343 and a5a>99"Sql.split ("'")#['SELECT * from a where id=','aaaaa haha Wocao','and id1=','FFF','and Xx=1 and a3= 4 and a4=3434343 and a5a>99']sarr= Sql.split ("'") sarr#['SELECT * from a where id=','aaaaa haha Wocao','and id1=','FFF','and Xx=1 and a3= 4 and a4=3434343 and a5a>99']sarr

Label:Encapsulated regular expression for SQL Server invocation New scalar-valued function name----open database--programmability----scalar-valued functions Use [Database]GOSET ANSI_NULLS onGOSET QUOTED_IDENTIFIER ONGOALTER function [dbo]. [Scalar value function name] ( @source ntext,--the original string @regexp varchar (1000),--Regular expression @replace varch

derived table needs to be written in a pair of parentheses, followed by the name of the AS clause and the derived table.For example, a simple derived table: The following code returns the number of direct subordinates with an employee ID of 2.SELECTa.mgrid,numofsubordinate from ( SELECTMgrid,COUNT(*) asnumofsubordinate from [TSQLFundamentals2008].[HR].[Employees] WHEREMgrid is not NULL GROUP byMgrid) asAWHEREA.mgrid=2The problem with a derived table is that it increases the complexit

-- ========================================= -- Title: SQL Server Regular Expression matching for Application Instances -- Author: maco_wang -- Time: 2012-03-25 -- Description: regular match in MS-SQL server -- ============================================== =/* assume that the test data is: col ---------- a B d c ea a B c dB B c d EE u g h wo A K d W1) to get a r

support for extended stored proceduresSurface Area Configuration tools, surface Area Configuration tool, and features, OLE Automation: Support for OLE Automation, Microsoft SQL Server 2005Microsoft SQL Server, on the server node, right-click, select Facets, and you can see a number of settings, one of which is the surface area ConfiguratorUse the example 1 code as follows:declare @source nvarchar (4000)Set

CopyCode The Code is as follows: Update dede_addonsoft set dxylink = Replace (dxylink, '.zip ', '.rar') where aid> 45553; Copy codeThe Code is as follows: Update 'table _ name' set field = replace(field,'.rar','.7z '); Table_name: name of the table to be queried,Field: field name in the table,Replace(field,'.rar', '.7z');: Regular Expression matching. Replace. rar in the field with. 7z. MySQL Regular Expressi