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How to Find the Interval Between Two Dates in PostgreSQL

In PostgreSQL, finding the interval between two dates can be accomplished using the built-in AGE() function or the minus “-” operator.

How to Convert a TIMESTAMP to String in PostgreSQL

PostgreSQL provides a built-in TO_CHAR() function that converts the given timestamp to a string. It utilizes a format mask to convert the input value to a string.

How to Extract DOW in PostgreSQL?

In PostgreSQL, the EXTRACT() and DATE_PART() functions are used to extract a DOW(an acronym for Day of Week) from a date or timestamp.

PostgreSQL TO_CHAR Function With Practical Examples

In Postgres, a built-in function named TO_CHAR() is used to convert any data type, such as an integer, interval, timestamp, date, etc., to a string.

PostgreSQL CURRENT_TIME Function With Practical Examples

The CURRENT_TIME function retrieve the current time and the time zone. It can accept an optional parameter “precision” to set the precision of the retrieved fractional seconds.

CREATE TABLE AS SELECT Statement in PostgreSQL

In Postgres, a new table can be created via the SELECT command; for this, the CREATE TABLE statement is used along with an AS clause followed by a SELECT statement.

PostgreSQL ARRAY_PREPEND() Function

PostgreSQL provides a built-in ARRAY_PREPEND() function that is used to append an element at the start of an array. It accepts two arguments: an element and an array.

PostgreSQL UNION ALL Operator With Examples

In Postgres, the UNION ALL operator combines the result sets of two or more queries into one table, including the duplicate records.

How to Find Array Length in PostgreSQL?

In Postgres, the ARRAY_LENGTH() is used to find the array's length. The ARRAY_LENGTH() function finds the array’s length based on the requested dimension.

PostgreSQL DROP VIEW IF EXISTS

If a VIEW to be dropped doesn’t exist, then Postgres throws a VIEW doesn’t exist error. To rectify this error, the “IF EXISTS” option is used with the DROP VIEW statement.