CONCAT returns 1st argument concatenated with 2nd argument. The arguments can be CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB or NCLOB. If the two arguments are of the same data type, then CONCAT returns a string of that type. If they are
FROM_TZ – Oracle SQL Function
FROM_TZ converts a timestamp and time zone value into a TIMESTAMP WITH TIMEZONE value. Syntax: FROM_TZ(timestamp, timezone) Example: SELECT FROM_TZ(TIMESTAMP ‘2004-10-24 06:00:00’, ‘2:00’) as RESULT FROM DUAL; RESULT ————– 24-Oct-04 06.00.00 AM +2:00
Length – Oracle SQL Function
LENGTH returns an integer that is the length of the 1st argument. The 1st argument can be a CHAR, VARCHAR2,NCHAR,NVARCHAR2,CLOB or NCLOB datatype. Example: SELECT LENGTH(‘How long is this?’) as RESULT FROM DUAL; RESULT —————- 17
LAST_DAY – Oracle SQL Function
LAST_DAY returns the last day of the month specified in argument1. Argument1 can be a DATE value or a string that can resolve to a DATE datatype. Example: SELECT LAST_DAY(’12-OCT-04′) as RESULT from DUAL; RESULT ————— 31-OCT-04
Lower – Oracle SQL Function
LOWER returns a string that is the same as the 1st argument with all the characters in lowercase. The argument to LOWER can be a CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB or NCLOB. Example: SELECT LOWER(‘Oracle Rocks’) as RESULT FROM DUAL;
LOCALTIMESTAMP – Oracle SQL Function
LOCALTIMESTAMP returns a TIMESTAMP value. You can specify an optional integer argument to specfiy the precision of the second field. Example: SELECT LOCALTIMESTAMP FROM DUAL; LOCALTIMESTAMP —————————- 13-SEP-05 03.02.49.407000 PM
Replace – Oracle SQL Function
The replace functions allows you to replace all occurences of one string with another. The syntax for the replace function is: replace ( string , search_string, change_to) string is the source string. search_string is the character or set of characters
Abs – Oracle SQL Function
ABS returns the absolute value of a numeric argument. It takes a numerics value, or any value that can be implicitly converted to a numeric value, as its argument and returns the absolute value as a numeric value. The return
Substr – Oracle SQL Function
The substr functions allows you to extract a substring from a string. The syntax for the substr function is: substr ( string , start_position , [ length ]) string is the source string. start_position is the position for extraction. The
Exp – Oracle SQL Function
EXP returns 2.71828183 raised to the exp power. Example: SELECT EXP(2) as squared from dual; SQUARED ———————- 7.38905609893065022…..