| Server IP : 88.99.149.37 / Your IP : 216.73.216.141 Web Server : nginx/1.31.2 System : Linux server-88-99-149-37 6.12.0-124.56.5.el10_1.x86_64 #1 SMP PREEMPT_DYNAMIC Fri May 15 06:12:08 EDT 2026 x86_64 User : muralimurth ( 1015) PHP Version : 8.4.23 Disable Function : exec,system,passthru,shell_exec,proc_close,proc_open,dl,popen,show_source,posix_kill,posix_mkfifo,posix_getpwuid,posix_setpgid,posix_setsid,posix_setuid,posix_setgid,posix_seteuid,posix_setegid,posix_uname MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/local/mysql/mysql-test/main/ |
Upload File : |
create table t1 (pk int primary key); insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10); select * from t1 order by now(), cast(pk as char(0)); pk 1 10 2 3 4 5 6 7 8 9 show warnings; Level Code Message Warning 1292 Truncated incorrect CHAR(0) value: '1' Warning 1292 Truncated incorrect CHAR(0) value: '2' Warning 1292 Truncated incorrect CHAR(0) value: '3' Warning 1292 Truncated incorrect CHAR(0) value: '4' Warning 1292 Truncated incorrect CHAR(0) value: '5' Warning 1292 Truncated incorrect CHAR(0) value: '6' Warning 1292 Truncated incorrect CHAR(0) value: '7' Warning 1292 Truncated incorrect CHAR(0) value: '8' Warning 1292 Truncated incorrect CHAR(0) value: '9' Warning 1292 Truncated incorrect CHAR(0) value: '10' drop table t1; # # MDEV-17020: Assertion `length > 0' failed in ptr_compare upon ORDER BY with bad conversion # set @save_sql_mode= @@sql_mode; SET @@sql_mode= ''; CREATE TABLE t1 (pk INT PRIMARY KEY); INSERT INTO t1 VALUES (1),(2); explain SELECT * FROM t1 ORDER BY 'foo', CONVERT(pk, CHAR(0)) LIMIT 2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index; Using filesort SELECT * FROM t1 ORDER BY 'foo', Cast(pk as CHAR(0)) LIMIT 2; pk 1 2 Warnings: Warning 1292 Truncated incorrect CHAR(0) value: '1' Warning 1292 Truncated incorrect CHAR(0) value: '2' set @@sql_mode= @save_sql_mode; drop table t1;