In Redis, the ZRANGE
command returns the specified range of elements in the sorted set stored at the specified key.
It can perform different types of range queries: by index (rank), by the score, or by lexicographical order.
Continue readingIn Redis, the ZRANGE
command returns the specified range of elements in the sorted set stored at the specified key.
It can perform different types of range queries: by index (rank), by the score, or by lexicographical order.
Continue readingWe have several options when it comes to using SQL to clone a table in MariaDB. And we have the option to clone the table with data, or without data.
Here are three SQL options for cloning a table in MariaDB.
Continue readingIn SQL Server, we can query the sys.default_constraints
system catalog view to return a list of DEFAULT
constraints in the current database.
In Redis, the ZADD
command is used to add one or more members to a sorted set, or to update the score for members that already exist in the sorted set.
It returns the number of elements added to the sorted set, or the number of elements updated if the CH
argument is used.
SQL Server supports sequences. Sequences enable us to create our own sequence of numeric values.
Sequences are similar to identity columns in that they generate a unique value that can be used to identify a column. However, sequences are created completely independently of any table.
Continue readingIn SQL Server, we can use the sys.synonyms
system catalog view to get a list of synonyms in the current database. This view returns all objects in the sys.objects
view of type SN
(which stands for synonym).
In SQL Server, if you ever need to move one or more tables to another schema, you can use the T-SQL ALTER SCHEMA
command.
If you’re getting an error that reads “ERR value is not an integer or out of range” when using the HRANDFIELD
command in Redis, it could be because you’re passing a second argument that isn’t an integer. Or if it is an integer, it could be out of range.
In SQL Server, we can query the sys.check_constraints
system catalog view to return a list of CHECK
constraints in the current database.
If you’re getting an error that reads “ERR wrong number of arguments for ‘srem’ command” in Redis, it’s probably because you’re calling the SREM
command with the wrong number of arguments.
To fix this issue, make sure you pass the correct number of arguments. At the time of writing, the SREM
command requires at least two arguments.