sql compare varchar

Dbo.f_struniteGo/*ID value----------- -----------1 AA,BB2 AAA,BBB,CCC(The number of rows affected is 2 rows)*/--===================================================================================2. New workaround (resolves in SQL Server 2005 with outer apply, etc.). )CREATE table TB (ID int, value varchar (10))INSERT into TB values (1, ' AA ')INSERT into TB values (1, ' BB ')INSERT into TB values (2, ' AAA

Search the internet about the data types of comparison, there are almost no three database comparison, I wrote some of the comparison of the fields, if there is a wrong place, please feel free. Java fields Oracle Fields MySQL Field SQL Server Fields Int Number Int Int Java.lang.double Number (P,s) Double Float Java.lang.String Varchar2

A few days ago the interview encountered a more interesting question, is that there are two identical structure of the table A and B, but the two tables belong to different business processes, after a period of time found that the data of the two tables can not exactly match, there may be a more than B, or b more than a, or two may exist at the same time, Need to write SQL to find out the differences of two tables. At that time, I just wrote a left jo

expression1 or expression2 belongs to the Unicode data type (nvarchar or nchar) and the other does not, the other is converted to a Unicode data type. If one of the expression1 or expression2 is a null value, CHARINDEX returns a null value when the database compatibility level is 70 or greater. When the database compatibility level is 65 or less, CHARINDEX returns a null value only if both expression1 and expression2 are null. If expression1 is not found within Expression2, CHARINDEX returns 0.

Tags: decimal point index VAR technology does not convert SRC int typeSELECT * FROM table nameOrder BY Convert (int,left (column name, CHARINDEX ('. ', column name + '. ') -1) ASC, column name ASCCHARINDEX ('. ', column name) query first. (dot) in the number ofCHARINDEX ('. ', column name + '. ') Give no data to the last side Add. (points) This allows the first digit to be found without a decimal point.Left (column name, CHARINDEX ('. ', column name)) Query decimal valueLeft (column name, CHARIN

Compare SQL Server, Oracle, and DB2 I. Openness: SQL ServerIt can only run on windows without any openness. The stability of the operating system is very important to the database.The Windows9x series products focus on desktop applications, and the NT Server is only suitable for small and medium enterprises.In addition, the reliability, security, and scala

Label:Original: How to quickly compare two tables in SQL ServerHow to quickly compare two tables in SQL ServerUnconsciously write the last blog post for 2014 years ~In general, how to detect the content of the two tables is consistent, reflected in the replication at the end of the publisher and the end of the subscrib

The syntax of the create statement is the same, and the data types are different. However, the syntax for creating a table using subqueries is different. SQL Server statements created using subqueries:Select empno, ename, Sal * 12 annsal, hiredate into dept30 from EMP where deptno = 30; Oracle uses query to create a table:Create Table dept30 Select empno, ename, Sal * 12 annsal, hiredate From EMP Where deptno = 30; DB2 uses a query to create a table

In the PHPADOACCESS database, how does SQL compare the time? Now we use PHP nbsp; + nbsp; ADO nbsp; + nbsp; ACCESS database to compare the Time field of ACCESS database with nbsp; COleDateT php ado access database, how does SQL compare the time size? Now we use PHP + A

Label:How to quickly compare two tables in SQL ServerUnconsciously write the last blog post for 2014 years ~In general, how to detect the content of the two tables is consistent, reflected in the replication at the end of the publisher and the end of the subscriber on the data aboveI've got a list of ways to solve this kind of problem from the database level.The first step of course is to check whether the

Requirements: Oracle database, b library C library, some tables have inconsistent table structure, now requires the C library as the standard, synchronous Update B library table structurePL/SQL connects to the C library,Tools--Compare User Objects. --Select the table that needs to be compared--and the Target Session (connected to library B)--Compare The

Now with PHP + ADO + Access database, compare time encountered problems The Time field in the Access database stores the temporal data in coledatetime format. The following two lines of code are code for the "Time" field that is written to the database during MFC programming COleDateTime Ct=coledatetime::getcurrenttime (); M_precordset_record->putcollect ("Time", _variant_t (CT)); ------------------------------------------------------- The following

]) VALUES (n ' efdf5e97-4fd9-4c05-bbc0-6f18b38bf2d0 ', n ' language ')INSERT [dbo]. [Table_1] ([a], [b], [C]) VALUES (n ' 116d448d-2cd8-4fdf-a7d8-c8f4f53e8e05 ', n ' math ')INSERT [dbo]. [Table_1] ([a], [b], [C]) VALUES (n ' cf33dbc1-c265-4835-bb17-f684893ad96c ', n ' study-study ')INSERT [dbo]. [Table_1] ([a], [b], [C]) VALUES (n ' f835c374-4fef-4fd9-8a5b-e16f5feb6bda ', n ' math ')INSERT [dbo]. [Table_1] ([a], [b], [C]) VALUES (n ' fb0ce23f-a2bc-4d65-82d3-fb137f414fcf ', n ' study-study ')Figu

Begin A while ago, there was an SQL query requirement in the project, with two tables of the same structure (Table_left Table_right), as follows: Figure 1. Examine the groups (GROUPID) of the table table_left, and whether there is a set of (GROUPID) data in the table table_right that is exactly the same as its data. As shown in Figure 1. You can see that there are two sets of data complete equality for table Table_left and Table_right: Figur

To compare two databases, you can use tools, such as toad, or write a stored procedure yourself. I will introduce an SQL statement to check whether the table structure is consistent, and so on, you can write an SQL statement that compares the consistency of indexes and the consistency of constraints. The disadvantage of this