Sqlplus annotation BUG: www.2cto.com [SQL] 23:24:13 @> conn oe/oe @ cry is connected. 23:24:25 OE @ cry>/* test */23:24:38 OE @ cry>/* test */select count (*) from orders; COUNT (*) ---------- 105 used time: 00: 00: 00.05 you can directly write comments or comments in front of them. Note that there is a space after/* (why do you need to explain this space). If we enter ed, when you call the editor to edit commands, write the content/* test comment */select count (*) from orders or write/* test comment */select count (*) in this way (*) from orders or -- test comment select count (*) from orders will prompt an error: ORA-24374: The definition is not completed before reading or executing and reading, as follows: [SQL] 23:24:53 OE @ cry> ed has been written to file afiedt. buf 1 */* test comment */select count (*) from orders 23:25:15 OE @ cry> // * test comment */select count (*) from orders * 1st row error: ORA-24374: Definition of used time not completed before reading or executing and reading: 00: 00: 00.01 23:25:18 OE @ cry> ed has been written to file afiedt. buf 1/* test comment */2 * select count (*) from orders 23:28:27 OE @ cry> // * test comment */* row 1st error: ORA-24374: definition of use time not completed before reading or executing and reading: 00: 00: 00.01 23:35:03 OE @ cry> ed has been written to file afiedt. buf 1 -- test commment 2 * select count (*) from orders 23:35:17 OE @ cry>/-- test commment * row 1st error: ORA-24374: before reading or executing and reading the data, define another one (explaining the case where space is required after/*) as follows: [SQL] 23:28:29 OE @ cry> select count (*) from orders; COUNT (*) ---------- 105 used time: 00: 00: 00.00 23:30:34 OE @ cry>/* test001 */select 123 from dual; COUNT (*) ---------- 105 used time: 00: 00: 00.01 different SQL statements are actually generated The same result (note that there is no space behind/* Here). If there is space, then [SQL] 23:31:06 OE @ cry>/* test001 */select 123 from dual; 123 ---------- 123 used time: 00: 00: 00.01 or above should be regarded as a small BUG in sqlplus comments.