sql server fuzzy string comparison

Tags: models config string Pac-cin product MVC5 ArticlesThe Moviedbcontext class that you create is responsible for handling the tasks of connecting to the database and mapping the movie objects to database records. You may ask a question, how do you specify that it will connect to the database? In fact, you do not specify a database to use, and the Entity framework will use the default localdb. In this section, we will explicitly add the application'

base logarithm Copy Code code as follows: S:select log10 (a) value 1 O:select log (10,10) value from dual; 1 9. Take the Square Copy Code code as follows: S:select SQUARE (4) value 16 O:select Power (4,2) value from dual 16 10. Take the square root Copy Code code as follows: S:select SQRT (4) Value 2 O:select SQRT (4) value from dual 2 11. To find any number of the bottom of the power Copy Code code as follows: S:selec

Label:Original:. Comparison of image type data in SQL ServerIn SQL Server, if you are comparing data for text, ntext, or image data types. You will be prompted that you cannot compare or sort the text, ntext, and image data types unless you are using the is NULL or like operator. However, image does not support like c

are currently read? Take MySQL InnoDB as an example:Snapshot read: a simple select operation, which belongs to the snapshot read, without locking. (Of course, there are exceptions, which are analyzed below) SELECT * from table where?; Current read: Special read operation, insert/update/delete operation, belongs to the current read, need to lock. SELECT * FROM table where? lock in Share mode; SELECT * FROM table where? for update; Insert into table values (...);

I. test environment: 1. Database: SQL Server 2008 2. Test Table: 15000 records, char primary key, no other indexes 3. Test Field: ntext type, maximum Data Length: 12000 Ii. Test statement: 1. Select * From producttemp where productdesc like '% 192.168.70.236%' 2. Select * From producttemp where charindex ('192. 168.70.236 ', productdesc)> 0 3. Select * From producttemp where patindex ('% 192.168.

First, test environment: 1. Database: SQL Server 2008 2. Test table: 15000 records, char type primary key, no more index 3. Test field: ntext type, maximum data length 12000 Second, the test statement: 1. SELECT * from producttemp where productdesc like '%192.168.70.236% ' 2. SELECT * from Producttemp where charindex (' 192.168.70.236 ', Productdesc) >0 3. SELECT * from Producttemp where P

) value from dual 81 12. Random Number acquisitionS: Select rand () ValueO: select Sys. dbms_random.value (0, 1) value from dual; 13. Get the symbolS: Select sign (-8) Value-1O: Select sign (-8) value from dual-1 14. Circumference RateS: Select Pi () value 3.1415926535897931O: Unknown 15. Sin, cos, and Tan parameters are in radians.For example, select sin (PI ()/2) value to get 1 (sqlserver) 16. asin, ACOs, atan, atan2 return radians 17. radian angle Interchange (, Oracle unknown)Deg

) 16. Asin, Acos, Atan, Atan2 return radians 17. radian angle Interchange (, Oracle unknown)DEGREES: Radian-> AngleRADIANS: Angle-> radian Comparison between values 18. Calculate the maximum value of the SetS: select max (value) value from(Select 1 valueUnionSelect-2 valueUnionSelect 4 valueUnionSelect 3 value) O: select greatest (1,-2, 4, 3) value from dual 19. Minimum value of the SetS: select min (value) value from(Select 1 valueUnionSelect-2 value

A few SQL Server paging stored procedure writing and performance comparisonsStored procedure 5 Kinds of pagination, the following code is from the forgotten when from someone else that CTRL + C, so just as a collection, hope the author see don't Spray me.------Create a Database tutorial data_test-----Create DATABASE Data_testGoUse Data_testGoCREATE TABLE Tb_testtable--Creating tables(ID int identity (1,1) p

Two databases when you merge, it's nice to have a visual tool. Someone had thought of this earlier and had an open dbdiff. Link Address: https://opendbiff.codeplex.com/This tool can be compared to tabular patterns and tabular data.But there are a few shortcomings:(1) If there is too much data on the table, errors may occur when loading. and cannot load data on a specific condition(2) When data is matched, the merge rule is whether the comparison index

Label: My SQL Data type SQL Server Data types Yes/no Bit Smallint (byte type) tinyint Integer (Long integer type) Int Real (single-precision floating-point type) Real Float (double-precision floating-point type) Float Currency

SQL compares the implementation code of one character in another string. For more information, see. SQL compares the implementation code of one character in another string. For more information, see. Version 1: Compare by Separator Algorithm concept: truncate the search string