If you’re getting an error that reads “ERR wrong number of arguments for ‘srandmember’ command” in Redis, it’s probably because you’re calling the SRANDMEMBER command without any arguments.
To fix this issue, make sure you pass the correct number of arguments. At the time of writing, the SRANDMEMBER command requires at least one argument, and accepts an optional second argument.
When creating a table with SQL, we can specify that the table is only to be created if it doesn’t already exist. Doing this prevents any errors from occurring in the event that the table already exists.
Here are some examples of doing this in various RDBMSs.
Continue readingIf you get an error that reads “WRONGTYPE Operation against a key holding the wrong kind of value” when using the ZINTER command in Redis, it’s probably because you’re passing a key with the wrong data type.
To fix this issue, be sure that each key you pass to the ZINTER command is either a set or a sorted set.
Starting with Redis 6.2.0, the ZRANGE command added the REV, BYSCORE, BYLEX and LIMIT options. The addition of the first three options means that the ZRANGE command can now do what the ZREVRANGE, ZRANGEBYSCORE, ZREVRANGEBYSCORE, ZRANGEBYLEX and ZREVRANGEBYLEX commands can do.
As a result, those commands are now deprecated (as of Redis 6.2.0).
Therefore, we should no longer use the ZREVRANGEBYLEX command. Instead, we should use the ZRANGE command with the BYLEX and REV arguments.
If you’re getting an error that reads Argument data type datetime2 is invalid for argument 1 of isdate function, it’s because you’re passing a datetime2 value to the ISDATE() function, but this function doesn’t work with datetime2 values.
To fix this issue, either pass a valid date type or use the work around below to provide similar functionality that works with datetime2 values.
Continue readingStarting with Redis 6.2.0, the ZRANGE command added the REV, BYSCORE, BYLEX and LIMIT options. The addition of the first three options means that the ZRANGE command can now do what the ZREVRANGE, ZRANGEBYSCORE, ZREVRANGEBYSCORE, ZRANGEBYLEX and ZREVRANGEBYLEX commands can do.
As a result, those commands are now deprecated (as of Redis 6.2.0).
Therefore, we should no longer use the ZRANGEBYLEX command. Instead, we should use the ZRANGE command with the BYLEX argument.
If you’re getting an error that reads “ERR wrong number of arguments for ‘smismember’ command” in Redis, it’s because you’re calling the SMISMEMBER command with the wrong number of arguments.
To fix this issue, make sure you’re passing the correct number of arguments. This command accepts two or more arguments, which represents a key and one or more members to check against that key.
Continue readingWhen it comes to converting date and time values in SQL Server, things can get a little complex. But in this article I hope to demystify this topic for anyone who’s confused when it comes to making conversions between dates and other data types, as well as changing the format of date/time values, and other considerations.
Let’s jump straight in.
Continue readingIf you’re getting an error that reads “NEXT VALUE FOR function does not support the PARTITION BY clause” in SQL Server, it’s probably because you’re trying to use the PARTITION BY sub clause in an OVER clause when using NEXT VALUE FOR to increment a sequence object.
In other words, the NEXT VALUE FOR function does not support the PARTITION BY sub clause of the OVER clause.
To fix this issue, either remove the PARTITION BY clause or change the statement to use another method for partitioning the results.
Starting with Redis 6.2.0, the ZRANGE command added the REV, BYSCORE, BYLEX and LIMIT options. The addition of the first three options means that the ZRANGE command can now do what the ZREVRANGE, ZRANGEBYSCORE, ZREVRANGEBYSCORE, ZRANGEBYLEX and ZREVRANGEBYLEX commands can do.
As a result, those commands are now deprecated (as of Redis 6.2.0).
Therefore, we should no longer use the ZREVRANGEBYSCORE command. Instead, we should use the ZRANGE command with the REV and BYSCORE argument.