Convert mysql binary to postgresql bytea

Question

What is the easiest way to export data from mysql and import it in postgresql?

I am having trouble with the MySQL binary fields conversion.

Answer 1

The equivalent of binary type in MySQL is bytea in PostgreSQL.

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You can use pgloader (simplest way)

After installing pgloader, create simple script test.load

load database  
from mysql://username:password@host/database_name
into postgresql://postgres:postgres@localhost/database_name

WITH include drop, create tables, create indexes, reset sequences

  SET maintenance_work_mem to '128MB',
      work_mem to '12MB'

 CAST type binary TO bytea drop typemod  using byte-vector-to-bytea;

Run it in your terminal:

pgloader test.load

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Another way is using mysqldump

1. Dump it with hex-blob option

mysqldump -u username -p -h host --skip-quote-names --hex-blob --skip-triggers \
--compact --no-create-info your_db your_table > prepg.dump

2. Do sed so it can be inserted to you bytea type column

sed "s/0x\([0-9A-F]*\)/decode('\1','hex')/g" prepg.dump > pg.dump

3. Load into your PostgreSQL table

\i '/path_to_file/pg.dump'

Reference

Answer 2

Generate your mysql script of your database using your editor and then try one of the sql converter. Personally I tried this converter before and it works well: http://www.sqlines.com/online