sql server compare two tables for differences

Label:1.oracle querying the number of tables in the database:Select COUNT (*) from User_tablesThe premise of this operation is that the login is successful2.mysql querying the number of tables in the database:SELECT COUNT (*) TABLES, table_schema from INFORMATION_SCHEMA. TABLES WHERE table_schema = ' database ' GROUP b

Label: If table failure is deleted because of a foreign KEY constraint, all constraints are removed first:--/1th Step ********** Remove foreign KEY constraints for all tables *************************/ DECLAREC1cursor for Select 'ALTER TABLE ['+ object_name(parent_obj)+ '] Drop constraint ['+Name+']; ' fromsysobjectswhereXtype= 'F' OpenC1Declare @c1 varchar(8000) Fetch Next fromC1 into @c1 while(@ @fetch_status=0) begin exec(@c1) Fetch Next from

name of the provider, Data source: Fill in the DSN name 1.70 2) Security column Local Login Fill SA Remote users and remote passwords fill in Sybase username and password 3 Use this security context to establish a connection Remote Login Enter Sybase username and password Enter a password with a password OK save 　　four use SA identity Login Query Analyzer You can detect Sybase data by executing the following SQL statement SELECT * from Linked

ODBC in the name of the provider, Data source: Fill in the DSN name 1.70 2) Security column Local Login Fill SA Remote users and remote passwords fill in Sybase username and password 3 Use this security context to establish a connection Remote Login Enter Sybase username and password Enter a password with a password OK save Four use SA identity Login Query Analyzer You can detect Sybase data by executing the following SQL statement SELECT

with a table without a primary key or unique key? If your table does not has a unique index (or a PRIMARY KEY constraint or UNIQUE key constraint, both of which create a U Nique index behind the scenes), then your dynamic cursor is converted to a static cursor. And all static cursors must is read only. If one of the tables referenced by the cursor has no unique index, the cursor would be converted to STATIC. And STATIC cursors is read-only. See Using

When I recently made a report using SSRS 2005, when I called a data source with a temporary table, the system would make an error and would not be able to go to the next step of the wizard as follows: There is a error in the query. Invalid object name ' #temptb '. After research, think of the following three solutions: 1. Use table variables instead of temporary tables, which avoids the syntax error of SSRS 2005, the disadvantage is that if the am

key endB.name astype, A.length asthe number of bytes consumed,ColumnProperty(a.ID, A.name,'PRECISION') aslength,ISNULL(ColumnProperty(a.ID, A.name,' Scale'),0) asNumber of decimal digits, ( Case whenA.isnullable= 1 Then '√' ELSE "' END) asallow NULL,ISNULL(E.text,"') asdefault value,ISNULL(g.[value],"') asField Description fromsyscolumns a Left JOINSystypes b onA.xtype=B.xusertypeINNER JOINsysobjects D ona.ID=d.id andD.xtype= 'U' andD.

=columnproperty (a.id,a.name,' PRECISION '), Number of decimal digits =IsNull(ColumnProperty (a.id,a.name,' scale '), 0), Allow null = case Time a.isnullable=1 then ' √ 'else ' end, Default value =isnull(E.text,"), Field Description =isnull(G.[value],") from Syscolumns a Left Join systypes b on A.xusertype=b.xusertype Inner join sysobjects D on (a.id=d.id)and (d.xtype=' U ')and (d.name ' dtproperties ') Left Join syscomments e on a.cdefault=e.id Left join sys

The last time we introduced simple data export and import, we only operate on a single file. If we want to import data to all the files under a directory at the same time, how can we achieve this? SSIS provides the foreach loop container in the control flow, which is easy to understand. Compared with the sequential container, SSIS can traverse and execute cyclically, you can repeatedly execute the control flow for each member of the specified enumerator: As you can see, the foreach loop window

1. Added field descriptions.EXEC sp_addextendedproperty 'Ms _ description ', 'Some description ', 'User ', Dbo, 'Table ', Table_name, 'Column ', Column_name Some Description: The Description to be added. Table_name, table name Column_name, which is the field name 2. Add Table descriptionEXEC sp_addextendedproperty 'Ms _ description ', 'Some description ', 'User ', Dbo, 'Table ', The table_name parameter is described above. 3. Obtain field descriptions

aggregation. // // public SqlString Terminate () { string output = string. Empty; //delete The trailing comma, if any if (this.intermediateresult! = NULL this.intermediateResult.Length > 0) { output = this.intermediateResult.ToString (0, This.intermediateResult.Length); } return new SqlString (output);}public void Read (BinaryReader R){Intermediateresult = new StringBuilder (r.readstring ());}public void Write (BinaryWriter W){W.write (This.intermediateResult.ToString ());}}H

Learning points: SQL-Build a database, build a table, build constraints, relational SQL Basic statement encyclopedia. TXT can be lifted up under the weight of lifting, lifting can not be called weight. The head must have the courage, the rise must have the emboldened. Learn to add, pride to reduce, opportunity to multiply, lazy to be apart. Three difficult problems in life: thinking, Acacia, single acacia.

forward way. You can generate DDL database scripts. This document describes reverse engineering. Start! First open EA, create a class chart, class digoal, right-click, "Import dB schema from ODBC" Then click the database name behind the database name... Button. The ODBC link is displayed. Select the tab page of machine data source and click "new. When selecting ODBC driver, note that "SQL native client" should be selected for sqlserver2005, an

records to a child table when there are no corresponding records in the primary tableNo school numbers that do not exist in the Student information table can be found in the score table2. You cannot change the values in the primary table and cause the records in the child table to be orphanedChange the number of students in the Student information table, and the student's score list should be changed as well.3. The child table has a record corresponding to the primary table, and the row cannot

Tags: io ar for SP c on CTI R AD01.CreateCREATE TABLE Strings (ID int);Go02.Add columns to a tableALTER TABLE StringsAdd String nvarchar (32);Go03.Adding calculated columnsALTER TABLE StringsAdd ID2 as (id+1);Go---See there's no need to specify type here.04.Modify DefinitionALTER TABLE StringsALTER column ID int NOT null;Go---Drop and add for computed columns first05.Delete ColumnALTER TABLE StringsDrop column ID2;Go---Delete when you want to add column do not column because according to the add

. [TagID] = tags. [TagID]; SELECT tags. [TagID] From [Tags],[tag_rss] WHERE the left JOIN Tag_rss. [TagID] = tags. [TagID]; It is also not feasible to use the + sign instead of the * number after testing.Collection of syntax differences between SQLite and SQL Server1. Returns the last inserted identity value returns the last inserted identity value for SQL

cursor, cyclically obtain table space usage */DECLARE Info_cursor cursorfor select '[' + [name] + ']' FROM sys. tables WHERE type = 'U '; OPEN partition fetch next from partition INTO @ tablename WHILE @ FETCH_STATUS = 0 begin insert into # tablespaceinfo EXEC sp_spaceused @ tablename fetch next from Info_cursor INTO @ tablename end insert into partition (record_date, expiration, expiration, [table_name], [rows_count], reserved, [data_size], index_si

Differences and selection of Microsoft SQL Server versions Microsoft SQLServer version differences and selection For new users who are new to SQL databases, there are many questions about SQL versions, but they are too lazy to st

When the foreign key constraint is added to an existing column in the table, the SQL Server 2005 database engine checks the existing data in the column by default, to ensure that all values except null exist in the referenced primary key or unique constraint column. However, by specifying with nocheck, the database engine can not check column data for new constraints and add new constraints without consider

, @ objectID END CLOSE publish_cursor DEALLOCATE publish_cursor GO Select p. publishid, p. contentid, a. contentid, p. objectID, a. articleID from publish p Inner join articles a on a. articleID = p. objectID Where objectid> 0 and p. contentid And (p. cellid = 160 or cellid = 138) Go -- Update publish set contentid = 0 where (cellid = 160 or cellid = 138) -- Select * from publish p where (p. cellid = 160 or cellid = 138) Is there any better way?You can also do this:Update publish set conten