pub unsafe extern "C" fn Table_scope_and_contents_source_st_check_period_fields(
this: *mut Table_scope_and_contents_source_st,
thd: *mut THD,
alter_info: *mut Alter_info
) -> boolpub unsafe extern "C" fn Table_scope_and_contents_source_st_check_period_fields(
this: *mut Table_scope_and_contents_source_st,
thd: *mut THD,
alter_info: *mut Alter_info
) -> bool