call select_all_exclude_one('vegas', 'uniqueIdentifier', @exclude_fields);

set @file_input = 'C:/MRTK_Enigma_IRD_VegaOSWP_New_Format.csv' ;
set @field_terminate = '|';
set @line_terminate = '\n';
set @date_format = '%Y%m%d %H:%i:%s';
set @columns_input = 'deskCode, bookName, riskType, riskTypeShiftSizeInBP, productCode, currency,
    maturity, maturityUnderlying, riskValue, currencyRiskValue,
    issuerCategory, countryOfIssuer, ratingCategory, postDate,
    @the_date, strike, currencyBase, indexCategory, EOL';


set @sql = concat('LOAD DATA INFILE ''', @file_input, '''

IGNORE

INTO TABLE skewrisk.vegas
FIELDS TERMINATED BY ''', @field_terminate, '''
LINES TERMINATED BY ''', @line_terminate, '''
IGNORE 1 LINES n(', @columns_input,

')nset lastUpdate      = str_to_date(@the_date, ''', @date_format, '''),
uniqueIdentifier    = MD5(concat(', @exclude_fields,  '))');

select @sql;
prepare stmt from @sql;
execute stmt;

Action: prepare stmt from @sql
Message: Error Code: 1295. This command is not supported in the prepared statement protocol yet

ALTER TABLE skewrisk.vegas ADD UNIQUE (
  deskCode, bookName, riskType, riskTypeShiftSizeInBP, productCode, currency,
  maturity, maturityUnderlying, riskValue, currencyRiskValue,
  issuerCategory, countryOfIssuer, ratingCategory, postDate,
  strike, currencyBase, indexCategory, EOL, lastUpdate
);

LOAD DATA LOCAL INFILE 'file'
    INTO TABLE table_name
    FIELDS TERMINATED BY ','
    OPTIONALLY ENCLOSED BY '"'
    LINES TERMINATED BY '\r\n'
    (unique_id, date, col1, col2, ... )
    SET unique_id = CONCAT(date,col1,col2)