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Summary of commonly used functions and time processing in SqlServer
YEAR() The function returns an integer value that represents the year of the specified date, typically used as Year, such as:YEAR('2023-03-1416:50:08.543')--2023REPLACE() The string replacement function is generally used as: Replace (the searched string, the string to be replaced, and the replacement value), such as:REPLACE ('Test Added ',' of ',' Test Data ') -- Test Added Test DataSTUFF() The function is used to delete a specified length of character and insert another set of characters at the specified starting point...
Database Operation Tutorial 2023-05-12 12:13:30 -
Summary of several methods for removing duplicate data in SQL (window function for data deduplication)
catalogueMethod 1: distinctMethod 2: groupbyMethod 3: Window functionWhen using SQL to extract and analyze data, we often encounter scenarios where data is duplicated, requiring us to perform data deduplication and subsequent analysis.Taking the sales report of a certain e-commerce company as an example, we commonly use distinct or group by statements to deduplicate data...
Database Operation Tutorial 2023-05-12 12:13:26 -
Complete uninstallation and reinstallation of SQL Server
catalogueComplete uninstallation and reinstallation of SQL Server1. Control Panel Delete Names with&quo; SQL” Procedure for2...
Database Operation Tutorial 2023-05-12 12:13:17 -
Steps to connect to a SQL Server database through Linux installation of ODBC
catalogue1. Download the ODBC installation package2...
Database Operation Tutorial 2023-05-12 12:13:06 -
Sql Server Management Implementation steps for Studio to connect to MySQL
targetGiven MySQL connection parameters (address and user), expect to use Microsoft; SqlServer Management Studio (hereinafter referred to as MSSSMS) connects to MySQL and directly queries or modifies data in MySQL in MSSSMS.realizationStep 1/4: Download and install MySqlConnector/ODBC at MySQL:: DownloadConnector/ODBCSelect the corresponding installation file based on the number of bits in the operating system...
Database Operation Tutorial 2023-05-12 12:13:01 -
SQL Server 2012 Building Database AlwaysOn (Database High Availability Cluster)
To achieve a highly available database cluster, the following aspects need to be considered:1. Database selectionSelect a database that supports high availability...
Database Operation Tutorial 2023-05-12 12:12:42 -
SQL Server Detailed steps for changing the default backup directory for databases
This article also applies to the latest version of SQL server 2008, 2016, 2019Open SSMSSelect Database, right-click, PropertiesSelect&quo; Permissions”, Click on&quo; View Server Permissions&# quo;Select&quo; Database Settings;, Modify&quo; Backup; Box PathNote: After changing the backup path of a database, it is valid for all databases. Please note that the final prompt indicates whether to save...
Database Operation Tutorial 2023-05-12 12:12:17 -
Mastering SQL Server Practical Tutorial - SQL Server Installation Guide
cataloguepreface1 Introduction to Database1.1 Classification of databases1...
Database Operation Tutorial 2023-05-12 12:12:14 -
SQL Server database judgment of the latest backup execution results (latest recommended)
1 2 errorlogtrace3 backupset4 SQL1 SQL Servermsdb.dbo...
Database Operation Tutorial 2023-05-12 12:12:02 -
SQL Server judges whether there is summary for database, table, column, view, stored procedure and function
catalogue1 Introduction Overview2 Database related judgments2.1...
Database Operation Tutorial 2023-05-12 12:11:57 -
Detailed Solution to SQL Server Installation Failure in Win11
catalogueDelete SQLServer related registryterms of settlement:summaryWin+R opens and runs the input services.msc to view all services and stop all services related to SqlServer, as follows:Open the control panel - uninstall all related software of SQL server;Delete SQLServer related registry1...
Database Operation Tutorial 2023-05-12 12:11:49 -
SQLserver2019 Express Installation and Some Problem Solving
Firstly, I am a technical novice who does not have a thorough understanding of some theoretical issues. If everyone has any problems, we can discuss them together and grow each other...
Database Operation Tutorial 2023-05-12 12:11:46
