What does it do? String expression in AB_SQL . The operator > concatenates the character strings in two adjacent operands into a single character string. Elementary SQL expressions> can be specified as the operands sql_elem1>, sql_elem2> with the following restrictions:
A literal must be a non-empty text field literal> of type c>.
Host variables and host expressions must be of ABAP type c>.
Columns of data sources> must have one of the dictionary types CHAR>>, CLNT>>, CUKY>>, LANG>>, or UNIT>>. The result of the concatenation must be no longer than 255 characters. Trailing blanks are handled as follows: