O problema é a sintaxe perto do nome da tabela. Remova as marcas de citação de test_11
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CREATE TABLE test_11 (
'Company_Name' varchar(160),
'Company_Number' varchar(8),
'Care_Of' varchar(100),
'PO_Box' varchar(10),
'Address_line1' varchar(300),
'Address_line2' varchar(300),
'Post_town' text,
'County' varchar(50),
'Country' text,
'Post_Code' varchar(20),
'Category' varchar(100),
'Status' varchar(70),
'Country_of_Origin' text,
'Dissolution_Date' date,
'Incorporation_Date' date,
'Accounting_refday' int(2),
'Accounting_refmonth' int(2),
'Next_due_date' date,
'Last_made_up_date' date,
'Accounting_category' text,
'Returns_next_due_date' date,
'Returns_last_made_up_date' date,
'Num_mort_changes' int(6),
'Num_mort_outstanding' int(6),
'Num_mort_part_satisfied' int(6),
'Num_mort_satisfied' int(6),
'SIC_code1' varchar(170),
'SIC_code2' varchar(170),
'SIC_code3' varchar(170),
'SIC_code4' varchar(170),
'Num_gen_partners' int(6),
'Num_lim_partners' int(6),
'URL' varchar(47),
'Change_of_name_date' date,
'Company_name_previous' varchar(160)
) ENGINE=InnoDB DEFAULT CHARSET =latin1;