The clock_timestamp() function is used to retrieve the current timestamp as of the current transaction’s start time. It returns a timestamp with time zone that represents the exact time when the current transaction began. Here’s how you can use the clock_timestamp() function in PostgreSQL: SELECT clock_timestamp(); The above SQL statement will return the current timestamp,…

The localtimestamp function is used to retrieve the current timestamp according to the time zone setting of your database session. This function returns the current date and time as a timestamp with time zone. Here’s how you can use localtimestamp in PostgreSQL: SELECT localtimestamp; The above SQL statement will return the current timestamp based on…

The statement_timestamp() function is used to retrieve the timestamp when the current statement within a transaction started. Unlike transaction_timestamp(), which gives you the timestamp when the transaction started (and remains constant throughout the transaction), statement_timestamp() provides the timestamp specific to the current SQL statement being executed. This can be useful for recording when individual statements…

In PostgreSQL, transaction_timestamp() is a built-in function that returns the current timestamp (including both date and time) of the start of the current transaction. This function is often used in SQL queries and transactions to record the timestamp when a particular operation or transaction began. Here’s how you can use transaction_timestamp(): SELECT transaction_timestamp(); The result…

In PostgreSQL, the LOCALTIME function is used to retrieve the current local time without the date component. It returns the current time in the time data type, which includes the hours, minutes, seconds, and fractional seconds. The basic syntax of the LOCALTIME function is as follows: SELECT LOCALTIME; This query will return the current local…

In PostgreSQL, the EXTRACT function is used to extract specific components (such as year, month, day, hour, etc.) from date and time values. This function allows you to retrieve individual parts of a timestamp or interval. The basic syntax of the EXTRACT function is as follows: EXTRACT(field FROM source); where field is the part of…

In PostgreSQL, the CURRENT_TIMESTAMP function is used to retrieve the current date and time along with the time zone information. It returns the current timestamp in the timestamp with time zone data type, which includes the date, time, seconds, milliseconds, and the time zone offset. The basic syntax of the CURRENT_TIMESTAMP function is as follows:…

In PostgreSQL, the DATE_PART function is used to extract a specific element (e.g., year, month, day, hour, minute, second, etc.) from a date, time, or timestamp value. It returns the numeric value of the specified component. The basic syntax of the DATE_PART function is as shown below: DATE_PART(field, source); where field is the part of…

In PostgreSQL, the TO_TIMESTAMP function is used to convert a string representation of a timestamp into a timestamp data type. It allows you to parse timestamp strings in a specific format and convert them into valid timestamp values that can be stored or used for date and time-related operations. The basic syntax of the TO_TIMESTAMP…

In PostgreSQL, the DATE_TRUNC function is used to truncate a date, time, or timestamp value to a specified precision. Truncation means setting specific parts of the date or time to zero or a default value while keeping the more significant parts unchanged. The basic syntax of the DATE_TRUNC function is as shown below: DATE_TRUNC(precision, source);…