SQL Server

SELECTSysobjects.name as table name,--------------as function: An alias for the field--sysproperties. [Value] As table description,----------[] square brackets function: In order to avoid conflicts with keywordsSyscolumns.name as field

Recently done a small test site, where there is a page, the page load need to calculate a number ofThere is a row of SQL statements,Select SUM (FileSize) from [File] where [email protected], everything is OK during native testingBut did not expect

Example:SELECT * from tb_students where name= ' Jay 'SELECT * from tb_students where name= ' JAY 'The results of these two sentences are the same.Case sensitivity requires adding collate chinese_prc_cs_as:SELECT * from tb_students where name collate

I don't even know that SQL has a GIS function, ignorantHttps://msdn.microsoft.com/zh-cn/library/bb933904.aspxStcontains (geometry data type)geometry instance completely contains another geometry instance.">returns 1 if the geometry instance

Key features of SQL Server CTP2.3Database-related EnhancementsRow level security already supports in-memory OLTP tables. Users can now implement Row-level security policies on memory-optimized tables.In addition, schemabinding, predicate functions,

Previous article http://www.cnblogs.com/qixi233/p/4766451.htmlThis is the operation of SQL ServerInterface comparison walking heart hahaha, will look, the main is the following additions and deletions to check four BTNThere are several basic

by pymssql Path SQL Server moment, directly Python does not issue the execution. by Mod_wsgi and Apache when deployed. All requests are found hang and then the database queries.Through Google to find the answer, thank Google, specific description of

How SQL Server 2008 Imports MDF,LDF filesOn the internet to find a lot of solution SQL Server import other computer copy of the MDF file, most of it is not complete. Encountered the solution is not the same as the problem, the bottom is found to

SQL Server Stored ProceduresStored procedures are similar to functions that can be reused. Stored procedures are more powerful and more flexible than functions.Stored procedures can contain logical control statements and data manipulation statements,

SQL Server Custom FunctionsNot only can you use system functions (such as aggregate functions, String functions, time-date functions, and so on) in SQL Server, you can also customize functions as needed.Custom functions are divided into

SQL Server ViewWhat is a view?A view is a virtual table in which the content originates from the result set of the query. It is only materialized if the index is established on the view.Views can filter and manipulate data, rather than accessing the

One, SQL Server table data is copied to Excel1, new query, with SQL statements to read out the table data2. Then, select data, right-click. Copy (also can click to copy with title), copy to Notepad (otherwise garbled)3, then copy the contents of the

Original: How do I tune SQL Server queriesI'm a lazy man, I just want to do as little as possible. I don't want to be too much when I'm working. Yes, you're right, it looks bad, and as a DBA it's not qualified. But in today's article, I want to show

The difference is, you should are using the syntax WITH (NOLOCK) (or WITH () ). Why? Without is WITH deprecated. From Table Hints on MSDN: Omitting the WITH keyword is a deprecated feature:this feature would be removed in a

the bcp command-line UtilityYou use the bcp (Bulk copy program) tool to address the bulk movement of data. This utility was bidirectional, allowing for the movement of data into and out of a SQL Server database.BCP uses the following syntax:bcp

How do I see how much space each table occupies in the SQL Server database?To create a stored procedure:CREATE PROCEDURE [dbo]. [Sys_viewtablespace]AsBEGINSET NOCOUNT on;CREATE TABLE [dbo]. #tableinfo (Table name [varchar] (COLLATE)

Explain the usage of Merge in SQL and the usage of SQLMerge A merge statement is a type of SQL statement. Available in SQL Server and Oracle databases, and unavailable in MySQL and PostgreSQL. MERGE is the new syntax of Oracle9i, used to merge

Description of duplicate data instances in a dataset deleted from the SQL Server database, and description of server instances In SQL Server database operations, when the result set in the table meets certain rules, we think it is duplicated data,

SQL server database creation, table creation, and creation Constraints The following describes SQL server database creation, table creation, and constraints. -- Before creating the School database: first, determine whether the database exists. If so,

A Brief Introduction to SQL Server spin locks and SQL spin Why do we need spin locks?It is meaningless to use a locks to synchronize data structure access between multiple threads before each shared data structure. The locks are closely related to