In MySQL, the BIT_XOR() function returns the bitwise XOR of all bits in a given expression.
XOR is an exclusive OR, and so a XOR b is mathematically equal to (a AND (NOT b)) OR ((NOT a) and b).
Tag: aggregate functions
Understanding the BIT_OR() Function in MySQL
In MySQL, the BIT_OR() function returns the bitwise OR of all bits in a given expression.
Understanding the BIT_AND() Function in MySQL
In MySQL, the BIT_AND() function returns the bitwise AND of all bits in a given expression.
SQLite JSON_GROUP_OBJECT()
The SQLite json_group_object() function is an aggregate function that returns a JSON object comprised of all name/value pairs in the aggregation.
In other words, it constructs a JSON object from the values provided by its arguments.
Continue readingSQLite JSON_GROUP_ARRAY()
The SQLite json_group_array() function is an aggregate function that returns a JSON array comprised of all values in the aggregation.
In other words, it constructs an array from the values provided by its argument.
Continue readingSUM() Function in PostgreSQL
In PostgreSQL, the SUM() function computes the sum of the non-null input values and returns the result.
In other words, it adds numbers and returns the result.
Continue readingAVG() Function in PostgreSQL
In PostgreSQL, the AVG() function computes the average (arithmetic mean) of all the non-null input values, and returns the result.
MAX() Function in PostgreSQL
In PostgreSQL, the MAX() function computes the maximum of the non-null input values and returns the result.
This function can be used on any numeric, string, date/time, or enum type, as well as inet, interval, money, oid, pg_lsn, tid, and arrays of any of these types.
MIN() Function in PostgreSQL
In PostgreSQL, the MIN() function computes the minimum of the non-null input values and returns the result.
This function can be used on any numeric, string, date/time, or enum type, as well as inet, interval, money, oid, pg_lsn, tid, and arrays of any of these types.
SUM() Function in MySQL
In MySQL, the SUM() aggregate function returns the sum of a given expression.
It can also be used to return the sum of all distinct (unique) values in an expression.
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