It is used to specify the second’s value in a numeric format that can range from 0 to 59. It is used to specify the minute’s value in a numeric format that can range from 0 to 59. It is used to specify the hour value in a numeric format that can range from 1 to 12. It is used to specify the hour value in a numeric format that can range from 0 to 23. It is used to specify the month value in a numeric format that can range from 1 to 31. It is used for abbreviating the day value, which can range from Sun to Sat. It is used to specify the month value in a numeric format that can range from 1 to 12. This is used for specifying the complete name of the month. This is used for getting the abbreviated month values. The year can be either specified as a two-digit value or a four-digit value and for the 20 th century, it’s going to be 0 to 49 values otherwise, it is considered as 20 th century. When we used two YY to specify the format, what we mean is the last two digits of the year. For example, the output value will be 2021. Year value can be specified in this format. The type of formats that can be specified in the TO_DATE function’s second parameter is as shown in the below table – YYYY Also, note that one or more occurrences of the same separator in the separator characters are also allowed, and separators can also be used at the beginning or ending part of the format that we have specified. We can use the separator characters in any combination in the string of the format we will specify in the second parameter. We can separate the multiple element’s formats which we need in the format string of the second parameter by using the following characters for separation – One example of the invalid string specified in the format for the date is that we cannot specify YYYY and YY both togetherly as they both are specified for interpreting the year component’s value from the source string. TIMESTAMP should contain the specification of at least one of the format elements to be used while converting that string value to TIMESTAMP. The valid format for the date should not contain more than one specification of the same component of the Also, the length of the value that is specified in the format of to date must be greater than 255 bytes. The second argument is an expression that returns the CHAR or VARCHAR datatyped value. It is necessary that the source string should contain the values or components that are required to generate the TIMESTAMP value in the format that we have specified. We can even pass a value of source string which is GRAPHIC or VARGRAPHIC datatype provided if we are using the Unicode database because, in Unicode database, the GRAPHIC and VARGRAPHIC datatype values are implicitly converted into the CHAR and VARCHAR datatype respectively, and the evaluation of TO_DATE() function will be done. In the above syntax, the source string can be any string or expression that returns the value in the CHAR or VARCHAR data type, a built-in datatype. Hadoop, Data Science, Statistics & others
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