Database Management System Emulation - Information Systems Reengineering, Integration and Normalization - page 247

For set expression, we can translate the same set of operations of OSQL to SQL.
For example,

4XHU\ 264/ ,QWHUVHFW 4XHU\ 264/

ń

4XHU\ 64/ ,QWHUVHFW 4XHU\ 64/

4XHU\ 264/ 8QLRQ 4XHU\ 264/

4XHU\ 64/ 8QLRQ 4XHU\ 64/

ń

4XHU\ 264/ ([FHSW 4XHU\ 264/

4XHU\ 64/ 0LQXV 4XHU\ 64/

([LVWVLGHQWLILHULQ4XHU\ ¶ 264/ 4XHU\´ 264/
4XHU\¶ 64/ ZKHUHH[LVWV,GHQWLILHU4XHU\´ 64/

ń

)RUDOOLGHQWLILHULQ4XHU\ ¶ 264/ 4XHU\´ 264/
4XHU\¶ 64/ ZKHUHH[LVWV$OO,GHQWLILHU4XHU\´ 64/

ń

)RUDOOLGHQWLILHULQ4XHU\ ¶ 264/ 4XHU\´ 264/ ń 4XHU\ 64/ ZKHUHH[LVWV

4XHU\¶ 64/ LQ4XHU\´ 64/