BackgroundWhen using Oracle or other databases, using the LIKE keyword for fuzzy query is commonly used by people, in the use of pure Chinese environment is very easy to use, there are some wildcards can be used, but in a pure English environment, the size of the need to accurately match the problem, the main reason is the problem of string
FL like '%{0}% ' and
Here like after is a string, so there must be a size-sensitive problem. For e
Tags: MSS com strong ideas declare SQL Server pre implementation LANSummary:The following is a method of using SQL script to determine how the string is case-sharing, as shown belowLab environment: SQL Server R2Implementation idea
different port number (all applications have to follow the connection string, pain). Restart the service, run a day, and then look at the Event Viewer, no longer found similar records, CPU utilization decreased to about 5, the system response significantly accelerated. The problem has been satisfactorily resolved.In order to prevent hackers to traverse the system login account, but also renamed the Administrator, but after renaming, SQL
Scene:
A recent DB server occasional CPU alarm, my email alarm threshold (Please read yù) value set is 15%, the beginning is not the case, thinking is what the statistical category of inquiries, and then more frequent.
Explore:
I decided to check to see what was going on, and the Order of my troubleshooting was as follows:
1, first turn on cacti monitoring, found that the most recent CPU average after a
The case sensitivity of the database name is compatible with the SQL server startup configuration method. For more information, see.
The case sensitivity of the database name is compatible with the SQL server startup configuration
There have been two recent cases of sending exceptions to SQL Server Database Mail, and these questions are also somewhat interesting, by the way. It is convenient for people who encounter similar problems to be crazy about these problems! Provide a little more ideas.Case 1: One of our database server suddenly send messages are not, when there is a problem, check
In SQL Server Case...end statements, there are generally two ways to use:1, equivalent to C # in If...else, example:1 SelectCName, Title= Case2 whenClevel='A1' Then 'Junior Programmer'3 whenClevel='A2' Then 'Intermediate Programmer'4 whenClevel='A3' Then 'Senior Programmer'5 Else 'Master of the
Case has two formats: Simple case function and case search function.
-- Simple case Function
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Case sexWhen '1' then 'male'When '2' then 'female'Else 'others' end
--
SQL Server Table Management _ about the operation of the table and adding and modifying the operation of the detailed (case code)Overview:Tables consist of rows and columns, and each table must have a table name.SQL CREATE TABLE SyntaxCREATE TABLE table_name (column_name1 data_type (size), column_name2 data_type (size), Column_name3 data_type (size),....);1. View
1. usage of the Case Function(1) Use the following commands: switch-case and if-else if.(2) Syntax:Case [field]When expression then display dataWhen expression then display dataElse display dataEnd(3) percent conversion of Quality Education1) We want to convert the displayed data to ABCDE. The rule is to show A at or above 90 points, B at or above 80 points, and so on.
2) The executed
The Code is as follows:
The structure of the landundertake table is as follows:
The structure of the table appraiser is as follows:
Access code:Copy codeThe Code is as follows:TRANSFORM First (Landundertake. valuerId) AS valuerId FirstSELECT Appraiser. quarterId, Landundertake. landCodeFROM Landundertake inner join Appraiser ON (Landundertake. valuerId = Appraiser. valuerID) AND (Landundertake. quarterId = Appraiser. quarterId)Group by Appraiser. quarterId, Landundertake. landCodePIVOT Landund
file is intact)
1. Stop the server SQL Service
2. delete database files (MDF files)
In this case, access to the database testbackup in SSMs will become unavailable:
At this point, because the SQL server instance is available, tail logs are backed up by specifyi
MyTable table, and the MyTable table has not been found (you can see, but not the query)
Let's try to create a mytable table again.
Mysql> CREATE TABLE MyTable (ID int not null,name varchar (a), dt date);
ERROR 1050 (42S01): Table ' mytable ' already exists
Will get a hint that the table already exists
Again, we can try to create a mytest library
mysql> CREATE DATABASE MyTest;
ERROR 1007 (HY000): Can ' t create database ' mytest '; Database exists
You'll also get hints that the library already
SQL Server clustered indexes are converted in functions and even fail (CASE ),
During the latest phase I optimization, the first N most time-consuming statements in the database are queried!
SELECT TOP 10 qp.query_plan,qt.text,total_worker_time from sys.dm_exec_query_stats CROSS APPLY sys.dm_exec_sql_text(sql_handle) qt CROSS APPLY sys.dm_exec_query_plan(pla
Recently in the first phase of optimization, the database of the most time-consuming first n statements to query out!SELECT TOP qp.query_plan,qt.text,total_worker_time from sys.dm_exec_query_stats cross APPLY sys.dm_exec_ Sql_text (sql_handle) QT cross APPLY sys.dm_exec_query_plan (plan_handle) QP where Qp.query_plan.exist (' Declare namespace qplan= "Http://schemas.microsoft.com/sqlserver/2004/07/showplan"; qplan:relop[@LogicalOp = "Index Scan" or @LogicalOp = "
Tags: des c style Class A colorWhen you synchronize an Oracle table to SQL Server, you may experience this error when you apply data on the SQL Server side. 2014-05-17 17:20:24 WARNING OGG-01154 SQL error-2147217887 mapping Applsys. Fnd_flex_validation_rules to dbo. Fnd_flex
In our project development, we often encounter the requirements of multiple conditional fuzzy queries. There are two common solutions for this: one is to stitch the SQL string at the end of the program, construct the corresponding SQL string based on whether a condition is selected, and use the dynamic SQL statement in the stored procedure of the database. The es
Before class, the popularization of small Knowledge: MSSQL and SQL Server is the same software, the name is different, MSSQL is Microsoft SQL Server,mssql is shorthand, some people like to call SQL Server directly, I prefer this n
EXCEPT/INTERSECT, CASE/ISNULL/COALESCE in SQL SERVEREXCEPT and INTERSECT
General explanation: Compare the results of two queries and return non-repeated values.
EXCEPTFrom the left query, all non-repeated values not found in the right query are returned.
INTERSECTReturns all non-repeated values in both the left and right queries.
The following are the basic rules
) and sum (case when sex=' 2 ' then population else 0 end) from CSP GROUP by
country;
The results are as follows: (iii) Select Case when usage Result 1: result 2: Example 1 SELECTCOUNT ( case if sex = 1 then 1 ELSE NULL END) number of boys, COUNT ( case if sex = 2 then 1 ELSE NULL END) number
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