1+ ,
1.0 SQL-parameter-name
1.0 SQL-variable-name
1.1  = 
1.2 expression
1.2 NULL
1.2 DEFAULT
1 (
1.1+ ,
1.1 SQL-parameter-name
1.1 SQL-variable-name
1.2 )  = 
1.2.1 (
1.2.1.1+ ,
1.2.1.1 expression
1.2.1.1 NULL
1.2.1.1 DEFAULT
1.2.1.2 )
1.2.1 row-fullselect