The timestamp data type is more readable. In our example, the text date and time ' 7/15:23:45'was converted to the timestamp value 15:23:45+02. The function TO_TIMESTAMP() returns a timestamptz value with time zone information. Notice that the input format is a string. You can find a complete list of datetime pattern elements in the PostgreSQL documentation. Note that we use slashes (/) as date part delimiters and colons (:) as time part delimiters. ss represents a 2-digit second (from 00 to 59).MI represents a 2-digit minute (from 00 to 59).HH24 represents a 2-digit hour (from 00 to 23). DD represents a 2-digit day of the month.Here are the main elements from the above pattern: The input format indicates how the characters in the string should be converted. This function takes two arguments: a string containing a date and time (in our example, the text ' 7/15:23:45') and the input format (in our example, ‘ YYYY/MM/DD/HH24:MI:ss’). Use the PostgreSQL function TO_TIMESTAMP() when you want to convert a string containing date and time data to the timestamp data type. These 2 PostgreSQL data types store date and time in a single field, the difference is that timestamptz converts the value to UTC and timestamp doesnt. Here’s the result of the query: new_timestamptz SELECT TO_TIMESTAMP('7/15:23:45', 'YYYY/MM/DD/HH24:MI:ss') 12:21:13-05 From this I need 12:21 (no seconds and milliseconds only date and time in hours and minutes) From a timestamp with time zone field, say updatetime, how do I get date as well as time like above using PostgreSQL select query. Let’s convert a string containing date, time, and time zone information to the timestamptz data type. You’d like to convert a string containing datetime information to a timestamp in PostgreSQL.
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