sql all in one for dummies

SQL UNION ALL syntaxTables Name: TableFields: ID username ytimeThe results to be achieved are:Query 1:Select Top 5 * from table where ID>20 ORDER by ID ASCQuery 2:Select Top 5 * from table where idAnd then query 1 and Query 2 of the sum, followed by the reverse ID. Originally thought: Query 2 Good To do, originally on the reverse, and are less than 20, so this does not need to change. Now it's time to sort

Tags: union collection SQL statement one post using filter connection DirectThe more union all is a direct connection, takes all values, records may have duplicate Union is a unique value, record is not duplicated 1. The syntax of UNION is as follows: [SQL Statement 1] UNION [

) AS BEGIN DECLARE @tbname varchar () Declare Tbroy cursor FOR SELECT Name from sysobjects where xtype= ' u '--the first cursor iterates through all tables open Tbroy fetch next from Tbroy to @tbname while @ @fetch_s Tatus=0 BEGIN DECLARE @colname varchar (DECLARE) Colroy cursor for select name from syscolumns where id=object_ ID (@tbname) and Xtype in (the Select Xtype from systypes where name in (' varchar ', ' nvarchar ', ' char ', ' nchar ')--data

, sum (case WHE N flag_dedu = ' 1 ' then Dec_deduamt ELSE 0 END) dec_dedu AMT, SUM (case if flag_dedu = ' 1 ' then Dec_deduqty ELSE 0 END) Dec_deduqty from dfeepay_03 GROUP by dfeesum _no) b on a.dfeesum_no = B.dfeesum_noThere are 1433891 rows in the returned result set, whereSELECT COUNT (*) from dfeepay_03--1103914SELECT COUNT (*) from ctlm8686--1131586SELECT COUNT (*) from dfeeapp_03--302305In the SQL script above, t

--. SQL script-- The only note is that f: \ dropobj. SQL is the operated. SQL;-- Your computer does not have a drive F. Replace it with drive D or E.-- Used to delete all objects of the current user-- Use for drop all objects in current user;Set heading off;Set feedback off;

Sometimes we only know the name of the column, but do not know which table the data in the end, you can use the following method to find the table containing this data. Copy Code code as follows: Select o.name objectname, c.name ColumnName from sys.columns c inner join sys.objects O on c.object_id=o.object_id where C . Name like '%columnname% ' ORDER by O.name, C.name In your actual trial, replace ColumnName with the name of the column you want to check. How to write a s

original:https://www.mssqltips.com/sqlservertip/1414/run-same-command-on-all-sql-server-databases-without-cursors/ -- this query would return a listing of all Tables in all databases on a SQL instance: declare @command varchar ( ) select @command = " use? Select

Tags: emptying data for all tables in a database using SQL statementsRecently found that the database is too large, the space is not enough, so it is intended to complete the database of data cleanup, but the table is very many, one by one empty, it is really troublesome, so you want to use SQL statements to clear all

The purpose of the UNION all directive is to merge the results of the two SQL statements together. the union All and union differ in that union all lists each qualifying material, regardless of whether the data value is duplicated or not.The syntax for UNION All is as follo

Union The Union command is used to select information about two tables. Similar to the join command. In any case, when the Union command is used, all selected columns must have the same data type. Note:Union only selects non-repeated values. SQL Statement 1 UNION SQL Statement 2 --------------------------------------------- Em

ArticleDirectory SQL Union syntax SQL Union all syntax Employees_china: Employees_usa: Instance Result Instance: Result QL Union operator The Union operator is used to merge the result sets of two or more select statements. Note that the SELECT statement inside the Union must have the same number of columns. Columns must also

I believe many of my friends have the need to use SQL statements to find all the tables in the specified database. For example, this requirement is even more common for database-related tools and projects, this chapter summarizes several methods to query all tables in a database using SQL statements. 1. Use the sysobj

Tags: des style http color using OSTurn from:querying the underlying tables for all references in a view using SQL commandsUsing SQL commands to query all referenced base tables in a view before having written how to exploit all referenced tables in

Ms SQL ServerEnterprise Manager EM:You cannot generate an SQL script for all tables in a database.Only generate "Default Value constraints"Related ddl SQL scripts,Instead of creating a table.Query analyzer QA:Ddl SQL scripts related to "Default constraints" can be generated

Tags: blog http io ar os using SP for onPreviously, if you need to create SQL Server AlwaysOn in Azure IaaS, you need to refer to the following stepsFrom the Mvps:sql Server high availability in Windows Azure IaasIn the new portal for Microsoft Azure, you can now create a direct SQL ServerHow to switch to new PortalIntroduction to Microsoft Azure Preview Portal and preview featuresAutomates the deployment o

Tags: sele employee validation Sort query statement end Eid Gen bleWhen writing SQL query statements, you often encounter a requirement similar to this: to query male workers older than 60 years old and all employees born in 1950. When dealing with this requirement, it is not possible to use a simple SQL statement to query out

The code is as follows:Copy code Create or replace procedure drop_all as cursor cur_obj isSelect uo. OBJECT_NAME, uo. OBJECT_TYPEFrom user_objects uoWhere uo. OBJECT_NAME not in ('drop _ all ')And uo. OBJECT_TYPE not in ('lob ');/* Cursor cur_tablespace isSelect ut. TABLESPACE_NAMEFrom user_tablespaces utWhere ut. TABLESPACE_NAME not in('System', 'sysaux ', 'undotbs1', 'temp', 'users ');*/V_ob

Label:Recently encountered a more interesting problem in the project, the online search for some methods, summarized here to share. We often encounter such a scenario: the need to query data, there are some query conditions, but when the query, we hope that when a condition is empty, then do not filter this condition, the main idea is to deal with the following: 1, the program collects query query condition processing, this suitable for dynamic SQL, s

: e_id E_name 01 Adams, John. 02 Bush, George. 03 Carter, Thomas. 04 Gates, Bill. Using the UNION command instanceList all the different employee names in China and the United States: Select E_name from Employees_china UNION select E_name from Employees_usa Results E_name Zhang, Hua Wang, Wei

Original: The SQL Server updatable subscription has a row filter in the Synchronous replication removal project without reinitialization of all subscriptions!In synchronous replication of updatable subscriptions, there is a row-filtered Item table, which prompts for reinitialization of all snapshots and applies this snapshot, which causes