sql_sel=f'''select securities_code,exchange from sys_base_enterprise_ipo where exchange = '1' or exchange = '2' or exchange = '3' and listed = '1' and social_credit_code='{social_code}' '''
sql_sel=f'''select securities_code,exchange from sys_base_enterprise_ipo where exchange = '1' or exchange = '2' or exchange = '3' and listed = '1' and social_credit_code='{social_code}' '''
sql_sel=f'''select securities_code,exchange from sys_base_enterprise_ipo where (exchange = '1' or exchange = '2' or exchange = '3') and listed = '1' and social_credit_code='{social_code}' '''