how to read sql database

Recently in the learning database of read-write separation and master-slave replication, the use of a master multi-slave strategy, using polling method, read the contents from the database. However, if a certain station from the database down, and the client does not know, e

Execute SQL Server database backup and SQL database backup using Windows batch processing commands Create mybackup. bat and enter the following content to directly run the script to start automatic database backup. You can also add the script to the windows Task Plan for exe

This article mainly introduces the thinkphp MySQL database reading and writing separation code analysis, with a certain reference value, interested in small partners can refer to. When using the original SQL statement to write operations, to use execute, read operations to use query. MySQL Data master-slave synchronization or to rely on the MySQL mechanism to ac

() Executes the dbug_push with the given string. mysql_drop_db () Revoke the database. The function is no longer valued, and the SQL statement is used to drop database instead. Mysql_dump_debug_info () Have the server write debug information to the log. Mysql_eof () Determines whether the last row of

Rs. Open SQL, Conn, are used to read data. Modify data: Rs. Open SQL, Conn, 1, 3 Delete data: You can directly delete data such as conn.exe cute ("delete * From New where id = 1. Rs. Open Syntax: Rs. Open source, activeconnection, cursortype, locktype Source is an SQL statement, activeconnection is a

Create table statement) -D, no-data No row information is written to the table. If you only want to export the structure of a table, this is very useful! Opt Same: Quick add-drop-table add-locks extended-insert lock-tables You should be given the fastest possible export to read a MySQL database backup server. -Pyour_pass, password [= your_pass] The password used to connect to the server. If you do not

In real-world development, we often encounter the need to transform data into SQL, or import SQL data from a database table into Excel. The code is as follows: codeusing system;using system.collections.generic;using system.componentmodel;using System.Data;using System.drawing;using system.linq;using system.text;using system.windows.forms;using GemBox.ExcelLite;us

T-SQL statement to modify the logic name, database name, and physical name of the SQL Server database, t-sqlsql This example describes how to modify the logical name, database name, and physical name of the SQL Server

1. View the version of the database SELECT @ @version 2. View the machine operating system parameters of the database EXEC master.. xp_msver 3. View Database Startup Parameters sp_configure 4. View Database Startup time Select CONVERT (varchar, login_time,120) from master. sysprocesses where spid=1 To view the

files on the MySQL database backup server before starting the export. -F, force, Even if we get an SQL error while exporting a table, continue. -H, host = .. Export data from the MySQL database backup server on the named host. The default host is localhost. -L, lock-tables. Lock all tables for start export. -T, no-create-info Create table statement) -D, no-d

---restore content starts---These days are in small projects, do is to know the Web page, I think the most difficult place to know the page in the data read, you can use json.js; you can also use PHP database to get data, below is some of the code I wrote to read database data in PHP, first home main content

cached data is read. When all data can be read from the cache, it becomes a logical read. The following is an example: SET STATISTICS IO ON Select count (*) FROM LINEITEM Table 'lineitem'. Scan count 3, logical reads 22328, physicalreads 3, read-ahead reads20331, lob logical reads 0, lob physical reads 0, lob

database parameterized ModeThere are two ways to parameterize a database, simple and mandatory (forced), and the default parameterization is "simple" by default.In simple mode, if the SQL is sent every time, unless it is exactly the same, it will be recompiled (special circumstances will be automatically parameterized, it is the focus of this article)The mandator

1. Open sqlserver Configuration Manager and enable the properties of SQLServer2005 service-SQL Server (SQLEXPRESS. in the built-in account, change the network service to a local system. After starting SQLServer2005Express from the beginning, attach the database. 2. Open SqlServer2005, right-click on the read-only database