Inserting text string with hex into PostgreSQL as a bytea

Question

I have a text file with several strings of hex in it:

013d7d16d7ad4fefb61bd95b765c8ceb
007687fc64b746569616414b78c81ef1

I would like to sto

Answer 1

More and sundry options:

-- how to insert the string "123[a char of value zero]abc456"
insert into mytable (testcol) values decode(E'123\\000abc456', 'escape');

-- how to insert in base64: insert string "abc456"
insert into mytable (testcol) values decode('YWJjNDU2', 'base64');