Sql Server

Databases are standardized but in detail they behave different

For a fancy application we want to query a chunk of rows from a table and therefore we need the minimum and the maximum of the Primary Key of these rows.
Because InnoDB is an Index Organized Table or Index Clustered Table we know that this access will use the Primary Key. But to be sure and to be compliant with the standard (and compatible) we use and ORDER BY on the Primary Key.

MySQL 5.7

First we create some test data:

mysql> CREATE TABLE t_my (
  ID CHAR(32) NOT NULL PRIMARY KEY
) ENGINE = InnoDB; …

Migration from other databases to MySQL or MariaDB

Database migration tools

A generic database migration tool to MySQL and MariaDB is the MySQL Workbench.

An alternative is the old MySQL Migration Tool Kit.

Recommended by MariaDB Foundation: Sqlines.

Adabas D to MariaDB migration

Project migrating an Adabas D database to MariaDB is in progress. More information are expected before end of 2015.

Oracle to MySQL or MariaDB migration

Data Migration Tools

  • MyOraDump is a tool to export data from an Oracle database to MySQL or MariaDB. …
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