sql server format function

. Example: Select Datename (Year,getdate ()) as ' year ' Executing the SQL statement above will see the return value of ' 2006 ' The table below lists the most important built-in date functions in SQL Server: function descriptionGETDATE () returns the current date and timeDATEPART () returns a separate part of a da

Source: Chief brother Welcome to share original to Bole headlinesBlog Preface SQL Server aggregate function in the actual work to meet the needs of a wide range of requirements, and for the optimization of the aggregation function has become a focus, a program optimization of the good or bad directly determine

operator valueGROUP by column_name have Aggregate_function (column_name) operator valueUCase () use (UCase () to capitalize the value of the field)The UCASE function converts the value of a field to uppercase. SELECT from table_nameLCase () use (LCase () to lower the value of the field to lowercase)The LCASE function converts the value of the field to lowercase. SELECT from table_nameThe use of Len () (l

SQL Server aggregate functions in the actual work to deal with a variety of requirements are still very extensive, for the optimization of aggregate functions has become a focus, a program optimization of the good or bad directly determines the program's declaration cycle. The SQL Server aggregate

Grammar REPLACE (' String_expression1 ', ' string_expression2 ', ' String_expression3 ') Parameter description ' String_expression1 ' The string expression to search for. String_expression1 can be either character data or binary data. ' String_expression2 ' The string expression to find. String_expression2 can be either character data or binary data. ' String_expression3 ' The string expression to replace. String_expression3 can be either character data or binary data. Popular understanding is

SQL Server Date functionDefinition and usageThe CONVERT () function is a general function that converts a date to a new data type.The CONVERT () function can display date/time data in different formats.GrammarCONVERT (data_type (length),data_to_be_converted,style)data_type (

) 120 or 20 Yyyy-mm-dd Hh:mi:ss (24h) 121 or 21 Yyyy-mm-dd hh:mi:ss.mmm (24h) 126 Yyyy-mm-ddthh:mm:ss.mmm (no spaces) 130 DD Mon yyyy hh:mi:ss:mmmAM 131 Dd/mm/yy Hh:mi:ss:mmmAM InstanceThe following script uses the CONVERT () function to display different formats. We will use the GETDATE () function to ge

Tags: replace identity varchar share log creation logical span BSP The source of this article: http://www.cnblogs.com/wy123/p/6617700.html SQL Server does not have a function index, in some scenarios when querying the field according to a certain part of the query or after some kind of calculation to do the query,If you use functions or other methods to

1. The question Today encountered a strange problem: the use of sp_helptext XXX query out the function definition name is not the same as the number of functions, and sp_helptext is actually query sys.all_sql_modules this system view. Directly query the definition field for this view and find that it is the same as sp_helptext. Is there a mechanism for system views such as caching? Or is it a bug? For the first question, the situation was urgent and

' exists 'EndElseBeginprint ' does not exist 'End-----------------Determine if the stored procedure name to be created existsif exists (SELECT * from dbo.sysobjects WHERE id = object_id (N ' [dbo].[ Stored procedure name] ') and OBJECTPROPERTY (ID, N ' isprocedure ') = 1)--Delete stored proceduresdrop procedure [dbo]. [Stored procedure name]GO-----------------Determine if the name of the view you want to create existsif exists (SELECT * from dbo.sysobjects WHERE id = object_id (N ' [dbo].[ View

In SQL Server database , if the query database has the index of the specified name or foreign key constraints, etc., often use the object_id (' name ', ' type ') method, take notes as follows:?Syntax: object_id (' objectname ') or object (' objectname ', ' type ')Role: The function returns the ID value of the specified object and can be validated in the sysobje

server| function In fact, this function is not provided by SQL Server, is tofu written, we do not because of tofu piece of everyone To use a stone to hit tofu: In fact, since this function generated after we use, it is impossible

Label:Original: SQL Server uses RowNumber () built-in functions with the over keyword to implement a common paging stored procedure (support for single-or multiple-table node-search-Sets paging)SQL Server uses the RowNumber () built-in function with the over keyword to imple

Label:1,trunc--convertOracle:select trunc (sysdate) from dual output: 2016/5/24 SQL Server:select CONVERT (varchar (+), GETDATE (), 111) Output: 2016/05/242,to_char--datenameOracle:select To_char (sysdate, "Day") from dual; Output Tuesday SQL Server:select Datename (Weekday, GETDATE ()); output Tuesday3 Rownum--sql Server