Database Management Systems
If you’re trying to run a multi-line query in SQLcl or SQL*Plus, and you keep getting an error such as “Unknown Command”, but running it in SQL Developer causes no such error, maybe this post will help.
By default, SQLcl and SQL*Plus don’t allow blank lines in SQL statements. However, you can change this with the SET SQLBLANKLINES command.
In Oracle, the SINH() function returns the hyperbolic sine of its argument.
In Oracle, the SIN() function returns the sine of its argument, where the argument is an angle expressed in radians.
This article lists the various aggregation pipeline operators that can be used to return individual date parts from a Date object in MongoDB.
Continue readingIn Oracle, the POWER() function returns its first argument raised to the power of its second argument.
In Oracle, the REMAINDER() function returns the remainder of its first argument divided by its second.
It’s similar to the MOD() function, except that it uses ROUND() in its calculation, whereas MOD() uses FLOOR() in its calculation.
Below are 4 functions that enable you to return the hour from a time value in MariaDB.
Continue readingIn Oracle, the MOD() function returns the modulo operation. In other words, it returns the remainder of its first argument divided by its second.
In Oracle, the EXP() function returns the value of e (the base of natural logarithms) raised to the power of the argument.
The number e, also known as Euler’s number, is a mathematical constant approximately equal to 2.71828.
Continue readingIn SQL Server, the REPLACE() function enables us to replace a string with another string. But what if you want to replace a list of characters with another list of characters?
The TRANSLATE() function might help.