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set names utf8; create database mysqltest1; select database_name, table_name, length(table_name) from mysql.innodb_table_stats where database_name = 'mysqltest1'; database_name table_name length(table_name) CREATE TABLE mysqltest1.test_jfg_table_name_with_64_chars_123456789012345678901234567890 ( id int(10) unsigned NOT NULL, id2 int(10) unsigned NOT NULL, PRIMARY KEY ( id, id2 ) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC PARTITION BY RANGE ( id ) SUBPARTITION BY HASH ( id2 ) SUBPARTITIONS 2 ( PARTITION test_jfg_partition_name_with_60_chars_1234567890123456789012 VALUES LESS THAN (1000) ENGINE = InnoDB, PARTITION pmax VALUES LESS THAN MAXVALUE ENGINE = InnoDB); select database_name, table_name, length(table_name) from mysql.innodb_table_stats where database_name = 'mysqltest1'; database_name table_name length(table_name) mysqltest1 test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#pmax#SP#pmaxsp0 82 mysqltest1 test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#pmax#SP#pmaxsp1 82 mysqltest1 test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#test_jfg_partition_name_with_60_chars_1234567890123456789012#SP#test_jfg_partition_name_with_60_chars_1234567890123456789012sp0 194 mysqltest1 test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#test_jfg_partition_name_with_60_chars_1234567890123456789012#SP#test_jfg_partition_name_with_60_chars_1234567890123456789012sp1 194 CREATE TABLE mysqltest1.éééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééé ( id int(10) unsigned NOT NULL, id2 int(10) unsigned NOT NULL, PRIMARY KEY ( id, id2 ) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC PARTITION BY RANGE ( id ) SUBPARTITION BY HASH ( id2 ) SUBPARTITIONS 2 ( PARTITION çççççççççççççççççççççççççççççççççççççççççççççççççççççççççççç VALUES LESS THAN (1000) ENGINE = InnoDB, PARTITION pmax VALUES LESS THAN MAXVALUE ENGINE = InnoDB); ERROR HY000: The path specified for @0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@0n@... is too long SET @file_per_table=@@GLOBAL.innodb_file_per_table; SET GLOBAL innodb_file_per_table=0; CREATE TABLE mysqltest1.t1 (a INT) ENGINE=INNODB PARTITION BY RANGE (a) SUBPARTITION BY HASH(a) (PARTITION `$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$` VALUES LESS THAN (10) (SUBPARTITION `--------------------------abcdef0123456789abcdef0123456789abcdef`, SUBPARTITION `0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef`) ); SET GLOBAL innodb_file_per_table=@file_per_table; SHOW CREATE TABLE mysqltest1.t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci PARTITION BY RANGE (`a`) SUBPARTITION BY HASH (`a`) (PARTITION `$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$` VALUES LESS THAN (10) (SUBPARTITION `--------------------------abcdef0123456789abcdef0123456789abcdef` ENGINE = InnoDB, SUBPARTITION `0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef` ENGINE = InnoDB)) INSERT INTO mysqltest1.t1 VALUES(1); DROP TABLE mysqltest1.`#mysql50#t1#P#@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024#SP#0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef`; ERROR 42000: Incorrect table name '#mysql50#t1#P#@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@' ALTER TABLE mysqltest1.t1 ADD FOREIGN KEY (a) REFERENCES mysqltest1.test_jfg_table_name_with_64_chars_123456789012345678901234567890; ERROR HY000: Partitioned tables do not support FOREIGN KEY ALTER TABLE mysqltest1.test_jfg_table_name_with_64_chars_123456789012345678901234567890 ADD FOREIGN KEY (a) REFERENCES mysqltest1.t1; ERROR HY000: Partitioned tables do not support FOREIGN KEY SELECT NAME FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME LIKE 'mysqltest1%'; NAME mysqltest1/t1#P#@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024#SP#0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef mysqltest1/t1#P#@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024@0024#SP#@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002d@002dabcdef0123456789abcdef0123456789abcdef mysqltest1/test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#pmax#SP#pmaxsp0 mysqltest1/test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#pmax#SP#pmaxsp1 mysqltest1/test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#test_jfg_partition_name_with_60_chars_1234567890123456789012#SP#test_jfg_partition_name_with_60_chars_1234567890123456789012sp0 mysqltest1/test_jfg_table_name_with_64_chars_123456789012345678901234567890#P#test_jfg_partition_name_with_60_chars_1234567890123456789012#SP#test_jfg_partition_name_with_60_chars_1234567890123456789012sp1 drop database mysqltest1;