sql query to compare two tables in different databases

// Function Description: Compares the similarities and differences between data tables in two access databases based on the ID field// The first database of P1// P2 second database// Tname name of the data table to be comparedFunction comprecordbyid (adoquery: tadoquery; P1, P2, tname: string): Boolean;VaRSqlstr: string;BeginSqlstr: = 'select * from ('+'Select t1.id, t2.id from ['+ p1 +']. '+ tname + 'as T1

The two tables are located in different databases. How do I perform Association queries between these two databases ??? From:Chinargb,Time:16:39:00,ID:2353262 please enlighten me! From:Yq4000,Time:16:42:00,ID:2353270 select database 1. DBO. Table. *, database 2. DBO. Table. * from database 1. DBO. Table, database 2.

Replication between mysql tables, same as databases and different databases Mysql statement We can first export the structure of table t1 under test, and then create a new table test1.t1. Execute the following statement Insert into test1.t1 select * from test. t1 limit 2 (limit) In a database Insert into t1 selec

code solves the problem.The complete jquery code is as follows//Load Table function Getgrid () {var Eid = $ ("#ExcelFileId"). Val (); if (Eid = = "") {Tipdialog ("Please select file type First", 3,0); return false; } $grid = $ ("TableID= ' gridtable '>Table>DivID= ' Gridpager '>Div>"); $ (' #grid_List '). Empty (). HTML ($grid); $.ajax ({url: "@Url. Content ("/dataswitch/gettestdata ")? department=" + $ ("#seldepartment"). Val () + "tablename= "+ $ (" #ExcelFileId

When the beta version of the project is synchronized (deployed) to the official version, the structure of the two databases compared with the synchronization, if the database is not modified when modifying those tables, it is difficult to synchronize two of databasesRedgate SQL Compare usage Brief description:1.

Tags: database mysql table replication differentMySQL's statementWe can first export the structure of the T1 table under test and create a new test1.t1 table.Execute the following statementINSERT INTO TEST1.T1 select * from Test.t1 limit 2 (limit bar number)If you are in a database that isINSERT INTO T1 SELECT * from T2 limit 2If the table structure is not the same two tables, you can consider, and refer to the following statementINSERT into Db_ds_edu

Tags: analyze different nbsp cas rom pre same count spanRequirements: There are two or three columns in a table, respectively, "Cargo name", "Arrival Time", "Shipping Time", "Storage Days", the name of the goods and two kinds of "fish", "meat", now the demand is such: if the meat purchase time and the fish shipped the same time the fish show the actual "storage Days", otherwise " Storage Days "is 0, the meat" storage days "normal display. Analysis: 1,

First, install the MySQL/Mariadb server and client, and connect to the server.In the command, uppercase letters are the keywords of SQL, and lowercase letters are their own attributes and data.0X00 connect to the databaseConnect to 127.0.0.1 using mysql and log on with the root user. The password is waiting for input.Mysql-h 127.0.0.1-u root-p0X01 create a databaseCreate a database named schoolCreate database school;0X02 create a tableCreate a table n

publishing side with the verification subscription function at the publisherMethod Seven: Compare the checksum values of the contents of two tables with checksum checkBut this approach is only confined to the two-table structure.I copy the data from the [t1_new] table to a new table for comparisonSELECT * from [dbo].[t1_new]SELECT * from [dbo].[T1_newreplica]SELECT SUM(CHECKSUM (*)) asChecksumvalue from

Operate tables in different databases at the same time. does it support transactions? mysql MYSQL database There are two tables in database A and database B, and two tables in table A and B are operated at the same time. it is innodb that supports transaction rollback ..

function at the publisherMethod Seven: Compare the checksum values of the contents of two tables with checksum checkBut this approach is only confined to the two-table structure.I copy the data from the [t1_new] table to a new table for comparisonSELECT * from [dbo].[t1_new]SELECT * from [dbo].[T1_newreplica]SELECT SUM(CHECKSUM (*)) asChecksumvalue from [dbo].[T1_old]SELECT SUM(CHECKSUM (*)) asChecksumva

Begin A while ago, there was an SQL query requirement in the project, with two tables of the same structure (Table_left Table_right), as follows: Figure 1. Examine the groups (GROUPID) of the table table_left, and whether there is a set of (GROUPID) data in the table table_right that is exactly the same as its data. As shown in Figure 1. You can see that t

Start A while ago, a project encountered such an SQL query requirement. There were two tables with the same structure (table_left table_right), as shown below: Figure 1. Check whether there is a group of (groupId) data in table table_right that is exactly the same as its data. 1. We can see that the table_left and table_right

/*methods of accessing different tables across multiple servers first create a linked server testt,* the RPC configuration of the linked server ' TESTT ' cannot be directly modified under MSSQL2008 to Ture, which can be modified by the following statements:*/ Use [Master]GOEXECMaster.dbo.sp_serveroption@server=N'Testt',@optname=N'RPC',@optvalue=N'true'GOEXECMaster.dbo.sp_serveroption@server=N'Testt',@optnam

O.table_schema , O.table_name, O.table_comment, O. ' column_name ' as Old_column_name, O. ' Column_type ' as old_column_type,n. ' COLUMN_NAME ' As New_column_name, N. ' Column_type ' as New_column_typefrom old_column_info O, new_column_info nwhere o. ' Table_schema ' = n.table_schemaand o. ' table_name ' = N.table_nameand o. ' column_name ' = N.column_ Nameand o.column_type! = n.column_type;--Query the old repository for data that does not exist in t

Description of synchronization parameters for different databases and tables in MySQL master-slave Replication Description of synchronization parameters for different databases and tables in MySQL master-slave Replication In rep

Hisdb.sys.syscolumns CINNER JOIN Hisdb.sys.systypes t on c.xtype= t.xtypeINNER JOIN hisdb.sys.sysobjects o on c.id= o.idwhere o.xtype= ' u ') as BOn a.a1 = b.a1) as aWHERE A.b1 is the NULL GROUP by a.a1---the stored procedures that are missing from two databasesSELECT A.NAME,A.B1 from(SELECT A.name,b.name as B1 from(SELECT A.name from Dbf.sys.sysobjects as a WHERE xtype = ' P ') As aLeft Join(SELECT A.name from Hisdb.sys.sysobjects as a WHERE xtype = ' P ') As BOn a.name = B.name) as a WHERE a.

Start A while ago, a project encountered such an SQL query requirement. There were two tables with the same structure (table_left table_right), as shown below: Figure 1. Check whether there is a group of (groupId) data in table table_right that is exactly the same as its data. 1. We can see that the table_left and table_right

To compare two databases, you can use tools, such as toad, or write a stored procedure yourself. I will introduce an SQL statement to check whether the table structure is consistent, and so on, you can write an SQL statement that compares the consistency of indexes and the consistency of constraints. The disadvantage o

@t1_newcount=COUNT (*)FromT1_new;SELECT@count=COUNT (*)From[T1_old]AsAINNERJOIN[T1_new]As BOn[B].[Id]=[A].[Id]and[B].[Log_time]=[A].[Log_time]-- If there are other fields in the table that you add yourself print print @t1_newcount if ( @count = @t1_newcount ) begin ' equal "end else begin select Span style= "color: #ff0000;" > ' Method five: With SQL Server's own Tablediff tool, Microsoft made this tool to comp