LTRIM removes from the left end of
char all of the characters contained in
set. If you do not specify
set, then it defaults to a single blank. If
char is a character literal, then you must enclose it in single quotation marks. Oracle Database begins scanning
char from its first character and removes all characters that appear in
set until reaching a character not in
set and then returns the result.
set can be any of the datatypes
NCLOB. The string returned is of
VARCHAR2 datatype if
char is a character datatype,
char is a national character datatype, and a LOB if
char is a LOB datatype.
The following example trims the redundant first word from a group of product names in the
SELECT product_name, LTRIM(product_name, 'Monitor ') "Short Name" FROM products WHERE product_name LIKE 'Monitor%'; PRODUCT_NAME Short Name -------------------- --------------- Monitor 17/HR 17/HR Monitor 17/HR/F 17/HR/F Monitor 17/SD 17/SD Monitor 19/SD 19/SD Monitor 19/SD/M 19/SD/M Monitor 21/D 21/D Monitor 21/HR 21/HR Monitor 21/HR/M 21/HR/M Monitor 21/SD 21/SD Monitor Hinge - HD Hinge - HD Monitor Hinge - STD Hinge - STD