In MariaDB, JSON_CONTAINS() is a built-in function that allows you to find out whether a specified value is found in the given JSON document, or at a specific path within the document.
It returns 1 if it does contain the value, 0 if it doesn’t, and NULL if any of the arguments are NULL.
Below are 4 functions that enable you to return the minutes portion from a time value in MariaDB.
Continue readingIn MariaDB, JSON_OBJECTAGG() is a built-in function that returns a JSON object containing key-value pairs, based on its two arguments.
In MariaDB, JSON_ARRAY_APPEND() is a built-in function that appends values to the end of the specified array/s within a JSON document, and returns the result.
In MariaDB, JSON_ARRAY_INSERT() is a built-in function that inserts a value into a JSON document and returns the result.
In MariaDB, JSON_OBJECT() is a built-in function that returns a JSON object containing the key/value pairs provided as arguments.
In MariaDB, JSON_ARRAYAGG() is a built-in function that returns a JSON array containing an element for each value in a given set of JSON or SQL values.
The function acts on a column or an expression that evaluates to a single value. It enables you to aggregate a result set as a single JSON array. Each row of the result set ends up as a single element in the array.
Continue readingMariaDB includes many functions that allow you to return time and datetime values in a variety of formats.
Two functions allow you to format the time portion using a 12 hour clock, with the AM/PM designator are DATE_FORMAT() and TIME_FORMAT().
There are many format specifiers that can be used with these functions, but only a couple that return the AM/PM designator.
Continue readingIn MariaDB, JSON_ARRAY() is a built-in function that returns a JSON array containing the specified values, provided as arguments.
In MariaDB, CURRENT_ROLE() is a built-in function that returns the current role name. The current role determines your access privileges.
The output of SELECT CURRENT_ROLE is equivalent to the contents of the information_schema.ENABLED_ROLES table.