PostgreSQL has a POSITION() function that returns the first starting index of a specified substring within a string.
If the substring doesn’t exist in the string, then zero is returned.
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RPAD() Function in PostgreSQL
In PostgreSQL, RPAD() is a function that enables us to add padding to the right part of a string.
LPAD() Function in PostgreSQL
In PostgreSQL, LPAD()is a function that enables us to add padding to the left part of a string.
FORMAT() Examples in MySQL
In MySQL, the FORMAT() function returns a number formatted to a specified number of decimal places.
It includes group separators and a decimal separator where applicable.
Continue readingHow CONCAT_WS() Works in PostgreSQL
In PostgreSQL, the CONCAT_WS() function concatenates two or more strings, placing a separator between each one. The separator is specified by the first argument.
How the CONCAT() Function Works in PostgreSQL
In PostgreSQL, the CONCAT() function concatenates the text representations of its arguments.
YEAR() Examples – MySQL
In MySQL, YEAR() is a built-in date and time function that returns the year from a given date expression.
It returns the year as a number in the range 1000 to 9999. For zero dates, it could return 0 or NULL with a warning, depending on the values in your sql_mode.
The Difference Between INSTR() vs LOCATE() in MariaDB
MariaDB has an INSTR() function and also a LOCATE() function. Both functions appear to do exactly the same thing – return the position of a substring within a string.
However, there is a difference.
Continue readingAbout the DATE_BUCKET() Function in Azure SQL Edge
T-SQL includes a DATE_BUCKET() function that allows you to arrange data into groups that represent fixed intervals of time. It returns the datetime value that corresponds to the start of each datetime bucket, as defined by the arguments passed to the function.
As far as I’m aware, the DATE_BUCKET() function is only available in Azure SQL Edge at the time of this writing.
Update: DATE_BUCKET() was introduced in SQL Server 2022.
JSON_OBJECTAGG() Function in Oracle
In Oracle Database, the JSON_OBJECTAGG() function creates a JSON object from a key-value pair.
Typically, the property key, the property value, or both are columns of SQL expressions.
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