- COMPARE DATABASES USING DBSCHEMA INSTALL
- COMPARE DATABASES USING DBSCHEMA SOFTWARE
- COMPARE DATABASES USING DBSCHEMA DOWNLOAD
slave:trueĮRROR object:nopk2.uid, differenceType:COLUMN_DIFFERENT_PRIMARY_KEY, note:master:true v.s. WARNING object:nopk2.uid, differenceType:COLUMN_DIFFERENT_IS_NULLABLE, note:master:false v.s. Loading Database Schema Metadata Slave #1Ĭomparing Database Schema Metadata MASTER with Slave #1ĮRROR object:onlyina, differenceType:TABLE_MISSING_IN_SLAVE_SCHEMAĮRROR object:onlyinb, differenceType:TABLE_EXCESS_IN_SLAVE_SCHEMAĮRROR object:nopk1, differenceType:NO_PRIMARY_KEYĮRROR object:nopk2, differenceType:NO_PRIMARY_KEY
![compare databases using dbschema compare databases using dbschema](https://docs.yugabyte.com/images/develop/tools/dbschema/dbschema-application.png)
Running on a i5 laptop with SSD and MySQL 8, comparison took less than 8MB heap size and 1 minute for 7.5 million rows nearly similar schemas.ĭ:\Tools\MySQL-Data-Compare>java -jar MySQLDataCompare-1.0.jar "jdbc:mysql://localhost:3306/schema_a?user=usertestA&password=password" "jdbc:mysql://localhost:3306/schema_b?user=usertestB&password=password" Here is a sample output from the test cases. Simply issue the command java -jar MySQLDataCompare-1.0.jar masterSchemaURL slaveSchemaURL1.
COMPARE DATABASES USING DBSCHEMA DOWNLOAD
Runįirst download mysql-connector-java-8.0.16.jar here and place this file in the path of MySQLDataCompare jar file.
COMPARE DATABASES USING DBSCHEMA INSTALL
Build and Testįor the automated test suite, install MySQL 5 or 8 on your local machine (127.0.0.1) and execute as admin the setup script test_schemas.sql. In the case the tool finds more than N rows (N=100 by default) different, the tool proceeds to analyze the next table. In the current version when multiple slaves are analyzed, master data (pk and md5) is loaded for every slave. Memory footprint shall then remain small. As soon as there is a match, any value lower than the match pair is immediately reported and removed from memory. As data is sorted by PK, it keeps a sorted list of differences (pk and md5 value) in memory. The tool being optimized for tables very similar in content, it retrieves 1 row alternatively from master then slave table. If some primary keys are missing on either master or slave database, or md5 value is not matching, the tool reports the difference, showing the primary keys. )) as MD5 from mytable order by pk1, pk2. The tool compares md5 of the row, simply speaking select concat(pk1, ',', pk2) as PK, md5(concat(pk1, ',', pk2, ',', coalesce(c1, 'null'), ',', coalesce(c2, 'null'). The tool issues warning when columns or primary keys are different type or different ordinal position. Two tables can be compared when they carry the same columns and the same primary keys. The tool first retrieves schema information and ensures that tables can be compared. It was developed to compare MySQL replicas, in particular for a MySQL InnoDB cluster (3 or more nodes), and possibly with an offsite DR replica.
![compare databases using dbschema compare databases using dbschema](https://resources.jetbrains.com/help/img/idea/2021.3/db_database_tool_window.png)
This tool does not create any remediation SQL statement. Please click the below link to download the scripts.This simple utility compares 1 or more MySQL schemas (databases) and pinpoints schema and data differences.
![compare databases using dbschema compare databases using dbschema](https://grobmeier.solutions/img/content/dbschema0.png)
You can use a centralized Server and create LinkedServers for Source and Target DB servers, or Create a LinkedServer for Target server on SourceDB server, then run the query on Source DB server.
![compare databases using dbschema compare databases using dbschema](https://theyarewatching.org/sites/default/files/preview_technology_facialrec.png)
This is very straightforward, Just get the row count of all database’s tables from both server and show the difference. This will compare Indices from both servers and list out missing indices on each server. So I have prepared 3 Tsql scripts to compare all databases objects between two SQL servers. Red-Gate is one of my favorite tool for comparison.
COMPARE DATABASES USING DBSCHEMA SOFTWARE
But there is so many good software available to compare the databases. I was in a point to compare two databases which are on two different servers, I have checked many websites and blogs, but unfortunately, I didn’t find any useful T-SQL query for that. I’m glad to inform that today I’m going to release my next phase of TsqlTools is SQLCOMPARE.