mysql comment symbols


mysql comment symbols
#
--
/* */


//=== https://dev.mysql.com/doc/refman/5.1/en/comments.html
"""...
9.6 Comment Syntax

...
From a “#” character to the end of the line.

From a “-- ” sequence to the end of the line. In MySQL,
the “-- ” (double-dash) comment style requires the second dash to be followed
by at least one whitespace or control character (such as a space, tab, newline, and so on).
This syntax differs slightly from standard SQL comment syntax, ...

From a /* sequence to the following */ sequence, as in the C programming language. ...

The following example demonstrates all three comment styles:

mysql> SELECT 1+1; # This comment continues to the end of line
mysql> SELECT 1+1; -- This comment continues to the end of line
mysql> SELECT 1 /* this is an in-line comment */ + 1;
mysql> SELECT 1+
/*
this is a
multiple-line comment
*/
1;