56 lines
2.6 KiB
Plaintext
56 lines
2.6 KiB
Plaintext
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Bug#25650399: DOWNGRADE FROM MYSQL 8.0 WITH WL#10128 TO 5.7
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WILL CRASH SERVER
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ALTER TABLE mysql.server_cost
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ADD COLUMN default_value FLOAT GENERATED ALWAYS AS (cost_name) VIRTUAL;
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ALTER TABLE mysql.engine_cost
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ADD COLUMN default_value FLOAT GENERATED ALWAYS AS (cost_name) VIRTUAL;
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FLUSH OPTIMIZER_COSTS;
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mysql.columns_priv OK
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mysql.db OK
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mysql.engine_cost OK
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mysql.event OK
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mysql.func OK
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mysql.general_log OK
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mysql.gtid_executed OK
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mysql.help_category OK
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mysql.help_keyword OK
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mysql.help_relation OK
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mysql.help_topic OK
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mysql.innodb_index_stats OK
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mysql.innodb_table_stats OK
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mysql.ndb_binlog_index OK
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mysql.plugin OK
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mysql.proc OK
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mysql.procs_priv OK
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mysql.proxies_priv OK
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mysql.server_cost OK
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mysql.servers OK
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mysql.slave_master_info OK
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mysql.slave_relay_log_info OK
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mysql.slave_worker_info OK
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mysql.slow_log OK
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mysql.tables_priv OK
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mysql.time_zone OK
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mysql.time_zone_leap_second OK
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mysql.time_zone_name OK
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mysql.time_zone_transition OK
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mysql.time_zone_transition_type OK
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mysql.user OK
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mtr.global_suppressions OK
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mtr.test_suppressions OK
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sys.sys_config OK
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SELECT * FROM mysql.server_cost;
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cost_name cost_value last_update comment
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disk_temptable_create_cost NULL # NULL
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disk_temptable_row_cost NULL # NULL
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key_compare_cost NULL # NULL
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memory_temptable_create_cost NULL # NULL
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memory_temptable_row_cost NULL # NULL
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row_evaluate_cost NULL # NULL
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SELECT * FROM mysql.engine_cost;
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engine_name device_type cost_name cost_value last_update comment
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default 0 io_block_read_cost NULL # NULL
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default 0 memory_block_read_cost NULL # NULL
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