June 2001
Intermediate to advanced
688 pages
19h 18m
English
Content preview from Berkeley DB
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db count
db count key
Description
The db count command returns a count of the number of duplicate data items for the key given. If the key does not exist, a value of 0 is returned. If there are no duplicates, or if the database does not support duplicates but a key/data pair exists, a value of 1 is returned. If an error occurs, a Berkeley DB error message is returned or a Tcl error is thrown.