addFrameBoundaryElement method
Implementation
void addFrameBoundaryElement(num exp) {
if (exp == 0) {
statement.buffer.write('CURRENT ROW');
} else if (exp < 0) {
Literal(exp.abs()).compileWith(this);
statement.buffer.write(' PRECEDING');
} else {
Literal(exp.abs()).compileWith(this);
statement.buffer.write(' FOLLOWING');
}
}