EXPERT RESPONSE
The LTRIM function will remove any set of characters from the left side of the string. Since you did not tell it which set of characters to trim off the
string, the LTRIM function will remove any blanks from the left side of the string. The RTRIM function works similarly, but from the right side of the string. You are converting a date field to a string and then LTRIM
will remove any leading blanks. Unfortunately, with your function, there are no leading blanks. If you wish to remove the leading zero, then you'll need to
let LTRIM know this as follows:
LTRIM(TO_CHAR(S_DATE, 'HH:MI AM'),'0')
The second parameter to the LTRIM function tells it to remove the leading zero.
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