1. Data Type Conversion Function – Data Type conversion function are used to convert one data type to another. Below are list of Data Type Conversion function-
E.g. CAST, TO_ALPHANUM, TO_BIGINT, TO_BINARY etc.
2. Date Time Functions - Date Time Function are used to convert Date/ Time in a different format.
E.g. – ADD_DAYS, ADD_MONTHS, ADD_SECOND, etc.
3. Fulltext Functions - Fulltext Functions is used for text search.
E.g. – SCORE etc.
4. Number Functions - Number Functions take a numeric value, or string with numeric characters, as input and return numeric values.
E.g. – ABS, ROUND, POWER, etc.
5. String Functions - String Functions take a string as input, process them and return value according to function.
E.g. (ASCII, CHAR, CONCAT, etc.)
6. Window Functions – Window Functions let user divide result set of a query into groups of rows named window partition.
E.g. RANK (), DENSE_RANK (), ROW_NUMBER (), etc.
7. Miscellaneous Function- There are some more functions, which are used for the miscellaneous job. E.g. – CONVERT_CURRENCY, CURRENT_SCHEMA, etc.
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