| String Functions |
| CHAR[ACTER]_LENGTH | (char_expr) | Return the number of characters in a character expression. |
| LOWER | (char_expr) | Convert all characters in a character expression to lower case. |
| POSITION | (search_expr IN target_expr) | Return the position of a character expression within another character expression. |
| SUBSTRING | (char_expr FROM pos FOR len) | Return a specific part of a character expression starting at FROM position FOR length. |
| TRIM | (['char' FROM] column) | Remove leading and/or trailing spaces or characters from a character expression. |
| UPPER | (column) | Convert all characters in a character expression to upper case. |
| || (Concatenation) | char_expr || char_expr | Concatenate multiple character expressions into a single character expression. |
| $LJ | (char_expr) | Left justify a character expression eliminating leading white space. |
| $LPAD | (char_expr, len [, pad_char ]) | Add leading 'pad' characters to a character expression. |
| $PROPER | (char_expr) | Shift the first letter of each word in a character expression to upper case and all other letters to lower case. |
| $RJ | (char_expr) | Right justify a character expression eliminating trailing white space. |
| $RPAD | (char_expr, len [, pad_char ]) | Add trailing 'pad' characters to a character expression. |
| |
| ————————————– | ———————————————– | ———————————————————————————————————- |