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select 1+1; 1+1 2 select 1+2; 1+2 3 SHOW GLOBAL VARIABLES LIKE 'thread_handling'; Variable_name Value thread_handling no-threads select @@session.thread_handling; ERROR HY000: Variable 'thread_handling' is a GLOBAL variable set GLOBAL thread_handling='one-thread'; ERROR HY000: Variable 'thread_handling' is a read only variable |