name of database software

MySQL introduced a rename database operation in 5.1, but did not support this command after MySQL5.1.23. Can be said to be an experimental function, not in the production support (mysql-5.1 release in mysql-5.1.30), then in production we sometimes for the pursuit of perfection need to change the library name. How to operate it?This provides an alternative approach. 1. Create a new library

Tags: result rom query using combined query execution environment equals on outputThe execution environment of a statement is a SQL window of Plsql, which is intended to determine the number of records not equal to a field from all tables in the entire database.The code is as follows:DECLARE S_sql clob:= "; --Declares a variable that is used to store the SQL statement of the queryV_citycode varchar2 (20); --Each SQL statement executes the query result code VARCHAR2 (20); --Query condition Begin

Problem Description:Today, when using HQL to query database information according to the name of the parameter, the error is as follows:Org.hibernate.QueryException:Space is isn't allowed after parameter prefix ': ' [from Users user where user.address=: UserAddress] at Org.hibernate.engine.query.spi.ParameterParser.parse (Parameterparser.java:95) at Org.hibernate.engine.query.spi.ParamLocationRecognizer.par

//Search for movies and arrange them by movie category PublicActionResult Index (stringMoviegenre,stringsearchstring) { //you can put an empty generic collection of type string varGenrelst =Newliststring>(); //The following code retrieves all types of LINQ queries from the database. varGenreqry = fromDinchdb. Movies byd.genreSelectd.genre; //Put the non-repeating movie category at the end of the collectionGenr

Five ways to change MySQL database name: The code is as follows Copy Code 1. RENAME DATABASE db_name to New_db_name This one.. This syntax is added to the MySQL 5.1.7, 5.1.23 and removed.It is said that it is possible to lose data. It's better not to use it. It's simple, just a rename. Grammar: The code is as f

Securely and quickly change the MySQL database nameGuideMySQL does not seem to have a statement to change the Database Name (maybe I don't know). If you have the permission to manage the database server, you can directly change the directory name, but if you do not have the

A solution that shares the SQL database instance name caused by the character "\" Escape or fails the remote connection and displays an error ERROR40: First, the problem introductionA long time no use C # to connect the database program, however, found some information on the internet, basically still write out, but debugging the initial completion of the progra

1. Open the SQL query analyzer (t-SQL) 2. Enter the query statement: Alter database name Modify file (name = original logical file name, newname = new logical file name)Alter database name