select 1+2/*hello*/+3; 1+2/*hello*/+3 6 select 1 /* long multi line comment */; 1 1 ; ERROR 42000: Query was empty select 1 /*!32301 +1 */; 1 +1 2 select 1 /*!52301 +1 */; 1 1 select 1--1; 1--1 2 select 1 --2 +1; 1 --2 +1 4 select 1 # The rest of the row will be ignored ; 1 1 /* line with only comment */; select 1/*!2*/; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '2*/' at line 1 select 1/*!000002*/; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '2*/' at line 1 select 1/*!999992*/; 1 1 select 1 + /*!00000 2 */ + 3 /*!99999 noise*/ + 4; 1 + 2 + 3 + 4 10 drop table if exists table_28779; create table table_28779 (a int); prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*' AND b = 'bar';"; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '/*' AND b = 'bar'' at line 1 prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*' AND b = 'bar';*"; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '/*' AND b = 'bar';*' at line 1 prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*! AND 2=2;"; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*! AND 2=2;*"; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ';*' at line 1 prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*!98765' AND b = 'bar';"; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '/*!98765' AND b = 'bar'' at line 1 prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*!98765' AND b = 'bar';*"; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '/*!98765' AND b = 'bar';*' at line 1 drop table table_28779;