temporal tables sql server

Label:1, longitudinal table turn horizontal table TABLE_A structure of the longitudinal table: Post-conversion structure: SQL example of a vertical table to a table: SELECT Name,SUM (case when Course = N ' language ' then GradeELSE 0END) as Chinese,SUM (case when Course = N ' math ' then GradeELSE 0END) as Mathematics,SUM (case when Course = N ' English ' then GradeELSE 0END) as 中文版FROM dbo. Table_aGROUP by Name 2, horizontal table to the longitudin

The pivot and Unpivot relational operators are the new features provided by SQL Server 2005, so when you use pivot and UNPIVOT for databases that are upgraded to SQL Server 2005, the compatibility level of the database must be set to 90 (you can use sp_ Dbcmptlevel stored procedures to set the compatibility level. Usi

The pivot and Unpivot relational operators are the new features provided by SQL Server 2005, so when you use pivot and UNPIVOT for databases that are upgraded to SQL Server 2005, the compatibility level of the database must be set to 90 (you can use sp_ Dbcmptlevel stored procedures to set the compatibility level. Usin

Label:How to obtain primary foreign key relationships in SQL Server 2008:Transferred from: http://www.cnblogs.com/ke10/archive/2012/06/11/2544655.htmlSELECT object_name (con.constid) ' Relationship name ',object_name (Sf.fkeyid) ' primary key table ',Fcol.name ' primary key ',object_name (Sf.rkeyid) ' foreign key table ',Rcol.name ' foreign key ',St.name ' data type 'From Sysforeignkeys SFINNER JOIN syscons

Label:Find the table name or the name of the stored procedure in the system table before processing it with a cursor Ps:sqlserver 2000 is using the system table is sysobjects, the Type field is: xtype; The system table for SQL Server 2005 or later is sys.objects, and the Type field is type In this article, for example, Sql2005, Sql2000 version, please follow the above instructions to replace Note the value

After creating a table on SQL Server, you often need to change the design of the table. If you have any questions, the system will prompt "you are not allowed to save the changes. You must delete the changes and recreate the following tables. The reason is that, to prevent data tables from being changed at will, the st

1. Export Excel tables from the databaseDefine a GridView1protected void Button1_Click (object sender, EventArgs e)//pour out data{if (GridView1.Rows.Count = = 0){Return}Else{gridview1.allowpaging = false;//data paging is canceled before all data can be exportedBind ();Export ("Application/ms-excel", "Filename.xls", GridView1);gridview1.allowpaging = true;//data is bound before rebindBind ();}public void Export (string fileType, String fileName, GridV

--Create a test library first test_tmp --Create two tables based on an existing table SELECT TOP to test_tab1 from Mistest_09428.dbo.squarer; SELECT TOP to test_tab2 from Mistest_09428.dbo.squarer; --Create a role EXEC sp_addrole ' Test_role1 '; 11. 12.--Assign the permissions of select to the role test_role1GRANT SELECT on TEST_TAB1 to Test_role1;GRANT SELECT on test_tab2 to Test_role1;

, Ss.sum_total_logi Cal_writes from (SELECT s.plan_handle, SUM (s.execution_count) Sum_execution_count, SUM (s.total_elapsed_time) sum_total_elapsed_time, sum (s.total_worker_time) Sum_total_worker _time, sum (s.total_logical_reads) sum_total_logical_reads, sum (s.total_logical_w Rites) sum_total_logical_writes from Sys.dm_exec_query_stats s GROUP by S.plan_handle) As SS Cross APPLY sys.dm_exec_sql_text (ss.plan_handle) T ORDER by Sum_total_logical_reads DESC

Label:2010-01-26 sp_spaceused can view the space occupied by a table, but cannot view all the tables at once. Today, we studied this SP and wrote the following query: --Refresh system dataDBCC UPDATEUSAGE (0) with NO_INFOMSGS --8k per pageSelect name = Name,id,rows = Convert (char (one), rows),reserved = LTrim (str (reservedpages * 8.,15,0) + ' KB '),data = LTrim (str (pages * 8.,15,0) + ' KB '),index_size = LTrim (str ((usedpages-pages) * 8.,15,0) +

--- Obtain the occupied capacity of tables in the SQL Server database Create procedure get_tableinfo If not exists (select * from dbo. sysobjects where id = object_id (n' [dbo]. [tablespaceinfo] ') and OBJECTPROPERTY (id, n' isusertable') = 1) Create table tablespaceinfo -- create a result storage table (Nameinfo varchar (50 ), Rowsinfo int, reserved varchar (20

In the past, SQL Server only performed operations on the graphic interface. Now I find that my SQL language skills are getting worse and worse. For example, how to add associations for two tables, cascade update and delete. I checked it at night and found that two methods can be used. Trigger method:Create trigger trg

如果由于外键约束删除table失败，则先删除所有约束：--/第1步**********删除所有表的外键约束*************************/DECLAREc1cursorforselect‘alter table [‘+ object_name(parent_obj) +‘] drop constraint [‘+name+‘]; ‘fromsysobjectswherextype =‘F‘openc1declare@c1varchar(8000)fetchnextfromc1into@c1while(@@fetch_status=0)beginexec(@c1)fetchnextfromc1into@c1endclosec1deallocate c1--/第2步**********删除所有表*************************/use 数据库名(是要删除表的所在的那个数据库的名称)GOdeclare@sqlvarchar(8000)while (selectcount(*)fromsysobjectswhere type=‘U‘)>0beginSELE

Tags: arc sql ima LTE div database pre hone alterCreate DATABASE test go use test go CREATE TABLE UserInfo ( Id INT IDENTITY PRIMARY KEY, Name VARCHAR, Age INT, Sex BIT, Address VARCHAR (+) ) GO ALTER TABLE dbo. UserInfo ADD Phone VARCHAR (one) ALTER TABLE dbo. UserInfo ADD CONSTRAINT Age_c CHECK (age>0 and age　　SQL SERVER build libraries,