sql server compare 2 tables for differences

From Internet The syntax differences between SQL Server and access are listed below, so that you can easily changeProgramDatabase query. Date separator numberAccess:Pound sign (#)SQL Server: marker (') BooleanConstantAccess: True, false; On, off; yes, no; INTEGER:-1

A netizen posted a message in one of my blog posts. I took it out and sorted it out. The problem is as follows: Our database has encountered a bottleneck in the process of increasing users. The database has a high frequency of concurrent operations. There are several tables with a large amount of data and tens of thousands of records, these tables are frequently operated, so deadlocks may occur when the

few main examplesU-----------User-created tables, different from system tables (user_table)S-----------system table (system_table)V-----------Views (view)P-----------Stored Procedure (sql_stored_procedure)2. View the column name of the tableSELECT * from syscolumns where id=object_id (' table name ') and name= ' column name '3. View the databaseSELECT * from sys

. Problem Solving The PowerDesigner tool supports Model Design for any type of relational database, because the feature definitions of each database model in PowerDesigner are stored in an xdb file, we can find it in [PowerDesigner_Install_Home]/Resource Files/DBMS. Of course, we can also create a new xdb and define the features of the database model we want to support. The answer to this question is obvious. Next, I will briefly describe how to use PowerDesinger9.5 Enterprise Edition. Some sim

This article mainly records the various problems that are found in the process of porting a database from SQL Server to MySQL. Based on SQL Server, the differences of MySQL are recorded. 1.IF statements First, the IF syntax in MySQL is different.IF then -

Tags: column display artificial objects based on serve cat COM statisticsBecause of the 2 databases before and after the project, it is necessary to change the structure of the statistical database, the change of each table needs to be counted, because the Manual check is a waste of time, wrote a little code: 1. Number of fields in the statistics table (how many columns are queried): 　Select count (name) from syscolumns where id=object_id (' Table nam

information changes, it is not much to say, this will not only occur on the temporary table, the ordinary physical table will also be due to the statistical information changes resulting in recompilation, more than a temporary table, the only difference is that the temporary table and the physical table statistics change the threshold value is not the sameWe knowThis is also easy to verify that the thresholds updated by the temporal table statistics depend on the amplitude of the data in the te

For complex queries, we can use nested and complex SQL statements, but sometimes it is more convenient and efficient to use temporary tables. SQL Server supports temporary tables. A temporary table is a table whose names start with a pound sign. If the temporary table is no

This article sample source code or material download Summary: The table-based partitioning feature in SQL Server 2005 provides flexibility and better performance for simplifying the creation and maintenance of partitioned tables. Trace the evolution from the functionality of logical partitioned tables and manual parti

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

@ whereand parameter can narrow the output range according to the filter. You can also add an order by statement. In the following example, the number of rows in each data table in the AdventureWorks database is returned and sorted by data indication: exec sp_MSForEachTable@command1 = "Print '?'", @command2 = "select count(*) from ?", @whereand = "ORDER BY 1" The following are some output results: [HumanResources].[Department]-----------16[HumanResources].[Employee]--

SET NOCOUNT on;DECLARE @sql VARCHAR (1024)DECLARE @table VARCHAR (64)DECLARE @column VARCHAR (64)DECLARE @value VARCHAR (64)Set @value = ' 14799059407 'CREATE TABLE #t (TableName VARCHAR (64),ColumnName VARCHAR (64))DECLARE TABLES CURSORForSELECT O.name, C.nameFrom syscolumns CINNER JOIN sysobjects o on c.id = o.idWHERE o.type = ' U ' and C.xtype in (167, 175, 231, 239)ORDER by O.name, C.nameOPEN TABLESFETC

automatically merged together.After executing the above code, the partition interval is as follows:Filegroup Partition Value RangeFG2 1 [last year, 2004/01/01]FG3 2 [2004/01/01, 2005/01/01]FG2 3 [2005/01/01, next year]Merging data from 2002 and 2003 to 2003 years later, we execute the following code:SELECT Sales. $PARTITION. Pf_orderdate ('2003')You will find that the result of the return is 1. The original return was

right-clicking the task of the database that you want to shrink the log file for corresponds to, shrink-file, as follows: Shrink log file Mode three (completely remove log files)Sometimes we don't need large log files at all, we need to completely remove the log files to free up hard disk space, we can achieve what we need with the following four steps. (1) Separating the database (2) Renaming log files (3) Reattach the database with no log files (4)

Tags: SQL Server tables, views, indexesFirst, the table related1. Create Use[test] Go setansi_nullson go setquoted_identifieron go CREATETABLE[dbo] . [Ceshi] ([Id][int]notnull, [Name][varchar (]null), CONSTRAINT[PK_Ceshi] primarykeyclustered ([Id]asc) with (Pad_index=off,statistics_ norecompute=off,ignore_dup_key=off,allow_row_locks=on, Allow_page_lo

' From SYS. dm_db_partition_stats As PS Inner Join SYS. Objects As So On PS. Object_id = So. Object_id Where Index_id 1 And So. Type = ' U ' Group By So. Name, so. Type Order By Sum (Row_count) Desc -- -------------------------------------------------------------------- /* DBCC statement: This command set is used to check SQL server statistics, trace activities, and check database

, 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

Recently do data transfer, due to misoperation, in the system table master tables created n multiple tables is really impossible to deleteFind the following ways to share---Specify the tables in the database to be deleted use mastergodeclare @sql varchar (8000), @TableName varchar () BEGIN DECLARE cur cursor for Sele

, DatabaseName represents the data name, and filename indicates the file name:ALTER DATABASE [DataBaseName] REMOVE FILE FileName;2. File group deletion:When the file group file is deleted, as normal understanding, you should be able to delete the filegroup directly, it is not practical, you can not delete filegroups.Because there are a few things that depend on filegroups, one is a partitioning scheme, and the other is a partitioned table that uses th

What if we want to get the number of all tables in the database? Let's look at several of the most common methods:-- Method 1 The code is as follows:Copy code Select B. name as tablename,C. row_count as datacountFrom sys. indexes,Sys. objects B,Sys. dm_db_partition_stats cWhere a. [object_id] = B. [object_id]AND B. [object_id] = c. [object_id]AND a. index_id = c. index_idAND a. index_id AND B. is_ms_shipped = 0 -- Method