ABAP data object (usually a
variable) specified in an operand position of an
Open SQL statement or of a statically embedded
Native SQL statement. In Open SQL, a host variable must be prefixed with the
@; in Native SQL, with the escape character
ADBC, the placeholder ? (to which ABAP data objects are bound) is used instead of host variables.
7.31 | 7.40 | 7.54