How to retrieve schema from a MySQL database using mysqldump

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This article defines a method for extracting schema from a particular MySQL database, without dumping the data from the tables.

This procedure can be helpful in cases of migration where you want schema but not the data of target database.

For example, checking if Application DB for version X can be migrated to Application DB version Y.

Dump Table Structure 

mysqldump -h localhost -u root -proot@123 -P3306 --single-transaction --skip-comments --no-data --skip-routines --skip-triggers --skip-events --add-drop-database --set-gtid-purged=OFF --hex-blob --databases emsent_dplicense | sed -e 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/' | sed -e 's/DEFINER[ ]*=[ ]*[^*]*PROCEDURE/PROCEDURE/' | sed -e 's/DEFINER[ ]*=[ ]*[^*]*FUNCTION/FUNCTION/' > ems52_schema_tables.sql 

Dump Routines, Triggers and Events Structure 

mysqldump -h localhost -u root -proot@123 -P3306 --single-transaction --skip-comments --no-create-db --no-data --no-create-info --routines --triggers --events --set-gtid-purged=OFF --hex-blob --databases emsent_dplicense | sed -e 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/' | sed -e 's/DEFINER[ ]*=[ ]*[^*]*PROCEDURE/PROCEDURE/' | sed -e 's/DEFINER[ ]*=[ ]*[^*]*FUNCTION/FUNCTION/' > ems52_schema_routines.sql

Reload both the files into target database and you are ready.

You can rename the dump files as per your choice, just an advice to keep the names descriptive.

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