I open a lmdb
database using this code:
lmdb_env = lmdb.open(source_path, readonly=True)
How can I count the number of records in this database?
I open a lmdb
database using this code:
lmdb_env = lmdb.open(source_path, readonly=True)
How can I count the number of records in this database?
I think it should be like this:
lmdb_env = lmdb.open(lmdb_file_name, readonly=True) print lmdb_env.stat()
Then it prints the directory that Jaco pasted here.
I found a simple solution using for
loop. Here it is:
count = 0 for key, value in lmdb_env.cursor(): count = count + 1
However, I think there should be a better way using pre-defined function.
You can use event.stat()
. It will return the following dictionary with entries
detailing the number of records in this database:
{'branch_pages': 1040L, 'depth': 4L, 'entries': 3761848L, 'leaf_pages': 73658L, 'overflow_pages': 0L, 'psize': 4096L}