![]() In this tutorial, you have learned how to use the CAST() and TO_DATE() functions to convert a string to a date in SQL. Notice that the date format must be corresponding to the date string as specified in the statement DD MON YYYYĬheck it out the Oracle TO_DATE() and PostgreSQL TO_DATE() functions for the details. The following shows the TO_DATE() function syntax: TO_DATE(string, format)įor example, to convert the string '' to a date value, you use the following statement: SELECT TO_DATE( '', 'DD MON YYYY' ) Oracle and PostgreSQL provide the TO_DATE() function that converts a string to date based on a specified format. Consequently, it converts the given expression into the specified data type. The CAST () operator takes an expression/column and a data type. For instance, you can convert a numeric string into an integer, string to double precision, string to boolean, etc. Here is the result: Code language: SQL (Structured Query Language) ( sql ) Convert string to date using TO_DATE() function PostgreSQL provides a CAST operator that assists us in converting one data type to another. Similarly, the following example also converts the string 180101 to January 1st, 2018: SELECT CAST( '180101' AS DATE) SQL Server converts the string 2018 to January 1st, 2018: The following example shows how to convert a string to a date: SELECT CAST( '2018' AS DATE) In case the function fails to convert, it issues an error, depending on the implementation of a specific database system. The CAST() function returns a DATE value if it successfully converts the string to date. In this syntax, the string can be any DATE value that is convertible to a date. These functions all follow a common calling convention. The string can be any character string data type such as VARCHAR or TEXT. ![]() The following illustrates the syntax of the CAST() function: CAST (string AS DATE)Ĭode language: SQL (Structured Query Language) ( sql ) The PostgreSQL formatting functions provide a powerful set of tools for converting various data types (date/time, integer, floating point, numeric) to formatted strings and for converting from formatted strings to specific data types. To convert a date to a string, you use the CAST () function as follows: CAST (date AS string) Code language: SQL (Structured Query Language) (sql) In this syntax: The date can be a literal or an expression that evaluates to a DATE value. SQL provides a CAST() function that allows you to convert a string to a date. Convert string to date using CAST() function Solution: We’ll use the TOTIMESTAMP() function. ![]() Let’s convert a string containing date, time, and time zone information to the timestamptz data type. Summary: in this tutorial, you will learn various functions that convert a string to a date in SQL. You’d like to convert a string containing datetime information to a timestamp in PostgreSQL. ![]()
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