Commands delete and deleterange

Prerequisites

Before running following commands, create a target database or ensure that a database has been created. For details about how to create a database, see 2.

Procedure

1. Go to the /home directory.

   cd /home

2. Run the scan command to view the existing data in the database.

   ldb  --db=/home/rocksdb/rkdb scan

   

3. Use ldb to run the delete command to delete the values of a specified key.

   ldb  --db=/home/rocksdb/rkdb delete k5

   

4. Run the get command to query the values of k5.

   ldb  --db=/home/rocksdb/rkdb get k5

   

5. Use ldb to run the deleterange command to delete the values of keys in a specified range.

   ldb  --db=/home/rocksdb/rkdb deleterange k2 k4

   

6. View the result after deletion.

   ldb  --db=/home/rocksdb/rkdb scan