sql server case syntax

= "select * from Student";SqlCommand cmd=new SqlCommand (Cmdstr,con);3. SqlDataReader class: Create an object that queries one or more dataSqlConnection conn=new SqlConnection ("server= server name; uid= user; pwd= password; database= database name");String cmdstr= "select * from Student";SqlCommand cmd=new SqlCommand (Cmdstr,con);SqlDataReader Reader=cmd. ExecuteReader ();4. SqlDataAdapter class: Create an

MySQL 8.0 adds SQL syntax support for window functions and CTE, and sqlcte I tried some new features of MySQL 8.0. If you have used MSSQL or window functions in Oracle (analytics functions in Oracle ),Before using MySQL 8.0, you will know the pain of using window functions to process logic. Although pure SQL can also implement functions similar to window functio

SQL Server database downgrade from high version to low version instance details, SQL Server details How to downgrade an SQL Server database from a higher version to a lower version Currently, SQLServer2000 is widely used. Many com

');//query all the records in the Tacher table; Select is the most common, and you can add various conditions to match the appropriate records later ./*includes and between * * to *; where **order by **group by * * Havingleft join on **;union **limit and other syntax;*/Select* fromTeacher　　Database injection of a very old technology, the database is a business or a Web site soul, if your database has been maliciously changed, then we do not have Mimi

laws that govern the types of personal data you can store, how they are stored, and how they are protected. Penalties for violations may be severe, including fines and damage to the company's public image. This staircase covers the features in SQL Server 2012, helps mitigate these threats, and so on. You must understand the threats to your data in order to know how to protect against these threats. Don't w

,lastname varchar (255) not null,firstname varchar (255), Address varchar (255), City VA Rchar (255), CONSTRAINT chk_Person CHECK (Id_P>0 AND City=‘Sandnes‘) )SQL CHECK Constraint on ALTER TABLEIf you create a CHECK constraint for the "id_p" column if the table already exists, use the following SQL:Mysql/sql Server/oracle/ms Access:ALTER TABLE PersonsADD CHECK (I

Query failed:sqlstate[42000]: Syntax error or Access violation:1064 you have a error in your SQL Syntax; Check the manual, corresponds to your MySQL server version for the right syntax to use near ' frommembers WHERE id = 0 ' At line 1 getvalueencoded ("FirstName"). " ".

Deletion of SQL syntax tables Delete statement We can delete the records in the table by using the DELETE statement. (Note: After the record is deleted, it cannot be restored, so the condition is set to correct) DELETE[TABLE.*] From Tableexpression WHERE criteria Table To delete the form name of the record, you can also replace it with *. Tableexpression The name of one or more tables. This parameter ca

) SQL Server Native Client 10.0 (SQL Server 2008) Microsoft Windows Server 2003 Service Pack 2, or later Microsoft Windows XP Service Pack 2, or later Microsoft Windows Vista Microsoft Windows

INSERT into ' Ftms_active_dealer ' (dealer_code,dealer_name,active_id,dealer_state) VALUES (' 415a1 ', ' He Lei ' 10023 ', ' 1 '),(' 31042 ', ' Wei ' 10023 ', ' 1 ');[ERR] 1064-you has an error in your SQL syntax; Check the manual that corresponds to your MySQL server version for the right syntax to use near ' 10023 ',

reprint please indicate from Zhu Zhu Homeland http://blog.csdn.net/zhgl7688Database SQL Basic Syntax1. Create SQL database,Open SQL Server Management Studio, click New Query, and in the Query window enter the following instruction to execute the Create SQL database.Instructi

Mysql error: MySQL server version for the right syntax to use near type = InnoDB solution, syntaxinnodb This article describes how to solve the mysql error: MySQL server version for the right syntax to use near type = InnoDB. We will share this with you for your reference. The details are as follows: I. Problems: When

How to compile and run PL/SQL code snippets from a Case Study PL/SQL is a process-oriented structured programming statement developed by Oracle for database business logic requirements. In the Oracle kernel, there are two important components: PL/SLQ engine and SQL engine, which are used to process structured PL/

SQL Alias syntax SELECT column_name (s) FROM table_name AS alias_name Column SQL Alias syntax SELECT column_name AS alias_name FROM table_name Alias instance: use the table name Alias Suppose we have two tables: "Persons" and "Product_Orders ". We specify aliases "p" and "po" for them respectively ". Now we want to lis

The case in the SQL statement is a bit like the multi-branch of a switch in a high-level programming language such as Java, but a little bit different is when the post is followed by when, in addition, when the subsequent branches are a bit like if followed by else. This is my personal acquaintance, case. When: Then.. [Else]..Below, looking at MySQL's Help inform

type with the highest priority from the type set of result_expressions and the optional else_result_expression. Result Value Simple case functions: Calculate input_expression, and then calculate the input_expression = when_expression of each when clause in the specified order. Returns the result_expression whose first calculation result is true for input_expression = when_expression. If input_expression = when_expression,

and end, and so on. Here is the basic structure of a PL/SQL block: DECLARE declarations section>BEGINexecutable command(s ) >exception handling>END; ' Hello World ' example:DECLARE message varchar2: =' Hello, world! ' ; BEGIN dbms_output. Put_Line(message); END; / End The line signal is the end of a PL/SQL block. To run the SQL command line cod

[ERR] 1064-you has an error in your SQL syntax; Check the manual-corresponds to your MySQL server version for the right syntax-use-to-line 3This error is prompted when the SQL statement is executed in MySQL 5.6,navicat for MySQL 10.0.10, and the following error is prompted w

Mysql error: MySQL server version for the right syntax to use near 'Type = innodb', syntaxinnodb When using SQL statements to create a table at work, mysql reports the following error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL

Reprint Please specify Source: http://blog.csdn.net/bettarwang/article/details/40180271When running a hibernate example, the ERROR:HHH000388:Unsuccessful:create table info_table (ID integer NOT NULL auto_increment, title varchar (255), Content V Archar (255), primary key (ID)) Type=innodbError:you has an error in your SQL syntax; Check the manual-corresponds to your MySQL