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DROP TABLE IF EXISTS tab2; SHOW variables like '%innodb_checksum_algorithm%'; Variable_name Value innodb_checksum_algorithm crc32 SELECT @@default_storage_engine; @@default_storage_engine InnoDB CREATE TABLE tab2(col_1 CHAR (255) , col_2 VARCHAR (255), col_3 longtext, col_4 longtext,col_5 BLOB, col_6 LONGBLOB , col_7 bigint) engine = innodb ; CREATE INDEX idx1 ON tab2(col_3(10)); CREATE INDEX idx2 ON tab2(col_4(10)); CREATE INDEX idx3 ON tab2(col_5(10)); # Generate a input text file for loading the table # check whether file exist # load the data into the table SELECT COUNT(*) FROM tab2; COUNT(*) 7014000 # Stop the server # Rewrite the tab2.ibd file into new checksum=CRC32 # Restart the DB server with default innodb_checksum_algorithm=InnoDB (Default) # no need to pass to the server. # Load the with repeat function SET @col_1 = repeat('A', 5); SET @col_2 = repeat('B', 20); SET @col_3 = repeat('D', 100); SET @col_4 = repeat('E', 100); SET @col_5 = repeat('F', 100); SET @col_6 = repeat('G', 100); # Check the table status with DML INSERT INTO tab2(col_1,col_2,col_3,col_4,col_5,col_6,col_7) VALUES (@col_1,@col_2,@col_3,@col_4,@cl_5,@col_6,1000); # Check with Read operation by record count SELECT COUNT(*) FROM tab2 where col_7=1000; COUNT(*) 1 # Stop the server # Rewrite the tab2.ibd file into new checksum=None # Check the page type summary with longform for *.ibd File::tab#.ibd ================PAGE TYPE SUMMARY============== #PAGE_COUNT PAGE_TYPE =============================================== # Index page # Undo log page # Inode page # Insert buffer free list page # Freshly allocated page # Insert buffer bitmap # System page # Transaction system page # File Space Header # Extent descriptor page # BLOB page # Compressed BLOB page # Other type of page =============================================== Additional information: Undo page type: # insert, # update, # other Undo page state: # active, # cached, # to_free, # to_purge, # prepared, # other # Page type dump for tab2.ibd # check whether dump.txt file exist # Restart the DB server with default innodb_checksum_algorithm=CRC32 SHOW variables like '%innodb_checksum_algorithm%'; Variable_name Value innodb_checksum_algorithm crc32 # Check the default engine is always InnoDB after restart SELECT @@default_storage_engine; @@default_storage_engine InnoDB # Load the with repeat function SET @col_1 = repeat('G', 5); SET @col_2 = repeat('H', 20); SET @col_3 = repeat('I', 100); SET @col_4 = repeat('J', 100); SET @col_5 = repeat('K', 100); SET @col_6 = repeat('L', 100); # Check the table status with DML INSERT INTO tab2(col_1,col_2,col_3,col_4,col_5,col_6,col_7) VALUES (@col_1,@col_2,@col_3,@col_4,@cl_5,@col_6,2000); # Check with Read operation that record count SELECT COUNT(*) FROM tab2 where col_7=2000; COUNT(*) 1 DROP TABLE IF EXISTS tab2;