1call mtr.add_suppression("option 'ngram-token-size': signed value 0"); 2call mtr.add_suppression("option 'ngram-token-size': signed value -1"); 3call mtr.add_suppression("option 'ngram-token-size': signed value 11"); 4select @@global.ngram_token_size; 5@@global.ngram_token_size 62 7select @@session.ngram_token_size; 8ERROR HY000: Variable 'ngram_token_size' is a GLOBAL variable 9show global variables like 'ngram_token_size'; 10Variable_name Value 11ngram_token_size 2 12show session variables like 'ngram_token_size'; 13Variable_name Value 14ngram_token_size 2 15select * from information_schema.global_variables where variable_name='ngram_token_size'; 16VARIABLE_NAME VARIABLE_VALUE 17NGRAM_TOKEN_SIZE 2 18select * from information_schema.session_variables where variable_name='ngram_token_size'; 19VARIABLE_NAME VARIABLE_VALUE 20NGRAM_TOKEN_SIZE 2 21set global ngram_token_size = 3; 22ERROR HY000: Variable 'ngram_token_size' is a read only variable 23# restart: --ngram_token_size=0 24select * from information_schema.global_variables where variable_name='ngram_token_size'; 25VARIABLE_NAME VARIABLE_VALUE 26NGRAM_TOKEN_SIZE 1 27# restart: --ngram_token_size=-1 28select * from information_schema.global_variables where variable_name='ngram_token_size'; 29VARIABLE_NAME VARIABLE_VALUE 30NGRAM_TOKEN_SIZE 1 31# restart: --ngram_token_size=11 32select * from information_schema.global_variables where variable_name='ngram_token_size'; 33VARIABLE_NAME VARIABLE_VALUE 34NGRAM_TOKEN_SIZE 10 35# restart: --ngram_token_size=10 36select * from information_schema.global_variables where variable_name='ngram_token_size'; 37VARIABLE_NAME VARIABLE_VALUE 38NGRAM_TOKEN_SIZE 10 39