• Numeric Functions
• String Functions
• Fulltext Functions
• Datetime Functions
• Aggregate Functions
• Data Type Conversion Functions
• Window Functions
• Series Data Functions
• Miscellaneous Functions

Numeric Functions

• ABS − It returns the absolute value of a numeric argument.

Example − SELECT ABS (-1) "abs" FROM TEST;
abs
1

• BINTOHEX − It converts a Binary value to a hexadecimal value.
• BITAND − It performs an AND operation on bits of passed argument.
• BITCOUNT − It performs the count of number of set bits in an argument.
• BITNOT − It performs a bitwise NOT operation on the bits of argument.
• BITOR − It perform an OR operation on bits of passed argument.
• BITSET − It is used to set bits to 1 in <target_num> from the <start_bit> position.
• BITUNSET − It is used to set bits to 0 in <target_num> from the <start_bit> position.
• BITXOR − It performs XOR operation on bits of passed argument.
• CEIL − It returns the first integer that is greater or equal to the passed value.
• COS, COSH, COT ((These functions return trigonometric value of the argument)
• EXP − It returns the result of the base of natural logarithms e raised to the power of passed value.
• FLOOR − It returns the largest integer not greater than the numeric argument.
• HEXTOBIN − It converts a hexadecimal value to a binary value.
• LN − It returns the natural logarithm of the argument.
• LOG − It returns the algorithm value of a passed positive value. Both base and log value should be positive.

String Functions

• ASCII − It returns integer ASCII value of passed string.
• CHAR − It returns the character associated with passed ASCII value.
• CONCAT − It is Concatenation operator and returns the combined passed strings.
• LCASE − It converts all character of a string to Lower case.
• LEFT − It returns the first characters of a passed string as per mentioned value.
• LENGTH − It returns the number of characters in passed string.
• LOCATE − It returns the position of substring within passed string.
• LOWER − It converts all characters in string to lowercase.
• NCHAR − It returns the Unicode character with passed integer value.
• REPLACE − It searches in passed original string for all occurrences of search string and replaces them with replace string.
• RIGHT − It returns the rightmost passed value characters of mentioned string.
• UPPER − It converts all characters in passed string to uppercase.
• UCASE − It is identical to UPPER function. It converts all characters in passed string to uppercase.

Date Time functions

• CURRENT_DATE − It returns the current local system date.
• CURRENT_TIME − It returns the current local system time.
• CURRENT_TIMESTAMP − It returns the current local system timestamp details (YYYY-MM-DD HH:MM:SS:FF).
• CURRENT_UTCDATE − It returns current UTC (Greenwich Mean date) date.
• CURRENT_UTCTIME − It returns current UTC (Greenwich Mean Time) time.
• CURRENT_UTCTIMESTAMP
• DAYOFMONTH − It returns the integer value of day in passed date in argument.
• HOUR − It returns integer value of hour in passed time in argument.
• YEAR − It returns the year value of passed date.

Data Type Conversion Functions

• CAST − It returns the value of an expression converted to a supplied data type.
• TO_ALPHANUM − It converts a passed value to an ALPHANUM data type
• TO_REAL − It converts a value to a REAL data type.
• TO_TIME − It converts a passed time string to the TIME data type.
• TO_CLOB − It converts a value to a CLOB data type.

• Current_Schema − It returns a string containing the current schema name.
• Session_User − It returns the user name of current session