system table, 1810 engine_cost table system table, 1021 ENTER SINGLE USER MODE command (NDB Cluster), 4441 entering queries, 304 enterprise components MySQL Enterprise Audit, 5224 MySQL Enterprise Backup, 5222 MySQL Enterprise Data Masking and De-Identification, 5224 MySQL Enterprise Encryption, 5223 MySQL Enterprise Firewall, 5224 MySQL Enterprise Monitor, 5221 MySQL Enterprise Security, 5223 MySQL Enterprise Thread Pool, 5224 enterprise extensions MySQL Enterprise Audit, 1465 MySQL Enterprise Data Masking and De-Identification, 1574 MySQL Enterprise Encryption, 1593 MySQL Enterprise Firewall, 1544 MySQL Enterprise Security, 1317, 1328, 1333 MySQL Enterprise Thread Pool, 1079 ENUM size, 2091 ENUM data type, 2038, 2043 Envelope() removed features, 45 environment variable AUTHENTICATION_LDAP_CLIENT_LOG, 632, 1367 AUTHENTICATION_PAM_LOG, 632, 1327 CC, 246, 632 CXX, 246, 632 DBI_TRACE, 632, 1156 DBI_USER, 632 HOME, 440, 632 LDAPNOINIT, 1339 LD_LIBRARY_PATH, 300 LD_PRELOAD, 199 LD_RUN_PATH, 300, 632 LIBMYSQL_ENABLE_CLEARTEXT_PLUGIN, 632 LIBMYSQL_PLUGINS, 632 LIBMYSQL_PLUGIN_DIR, 632 MYSQLD_OPTS, 199 MYSQLX_TCP_PORT, 632 MYSQLX_UNIX_PORT, 632 MYSQL_DEBUG, 341, 632, 1159 MYSQL_GROUP_SUFFIX, 632 MYSQL_HISTFILE, 440, 632 MYSQL_HISTIGNORE, 440, 632 MYSQL_HOME, 632 MYSQL_HOST, 367, 632 MYSQL_OPENSSL_UDF_DH_BITS_THRESHOLD, 632, 1596 MYSQL_OPENSSL_UDF_DSA_BITS_THRESHOLD, 632, 1596 MYSQL_OPENSSL_UDF_RSA_BITS_THRESHOLD, 632, 1596 5375