Syntax error in automatically formed SQL query [closed]

问题

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.

Closed 6 years ago.

I am trying to generate a query for use with a smart search field, ala google suggest.

I can not form the query directly, although I can see what query was made via the logs.

I have posted the query that gets sent, which has a syntax error but I am unsure why.

SELECT DISTINCT IF(guests.passport != '', Concat(guests.passport,
                                                          IF(
                                          guests.lastname !=
                                          ''
                                                   OR guests.passport!= '',
                                                          Concat
                                                          (' (',
                                                          IF(guests.lastname !=
                                                             '',
                                                          guests.lastname,
                                                          '{blank}')
                                                          , ', ',
                                                          IF(
                                                          guests.firstname != ''
                                                             , guests.passport,
                                                          '{blank}')
                                                             , ')'), '')),
                                IF(guests.lastname != ''
                    OR guests.passport!= '', Concat(IF(guests.lastname != '',
                                                    guests.lastname,
                                                    '{blank}'), ', ',
                                                                          IF(
                                             guests.passport!= '',
                                             guests.passport, '{blank}')),
                                ''
                ))              AS display,
                `guests`.`uuid` AS VALUE,
                as              secondary,
                guests.id       AS classname
FROM   guests
WHERE  ( guests.id = 0 )
       AND ( ( guests.firstname LIKE 'b%'
                OR guests.lastname LIKE 'b%'
                OR guests.passport LIKE 'b%' )
              OR (( guests.firstname LIKE 'b%'
                     OR guests.firstname LIKE '% b%'
                     OR guests.lastname LIKE 'b%'
                     OR guests.lastname LIKE '% b%'
                     OR guests.passport LIKE 'b%'
                     OR guests.passport LIKE '% b%' )) )
ORDER  BY IF(guests.passport != '', Concat(guests.passport,
                                              IF(guests.lastname != ''
                                                                OR
                                                 guests.passport!= '',
                                              Concat
                                              (' (',
                                              IF(guests.lastname != '',
                                              guests.lastname, '{blank}')
                                              , ', ',
                                                                        IF(
                                              guests.firstname != ''
                                                       , guests.passport,
                                              '{blank}')
                                                       , ')'), '')),
                    IF(guests.lastname != ''
              OR guests.passport!= '', Concat(IF(guests.lastname != '',
                                              guests.lastname,
                                                                       '{blank}'
                                              ), ', ',
                                       IF(
                                       guests.passport!= '', guests.passport,
                                       '{blank}'
                                       )),
                    ''
          ))
LIMIT  0, 8  

Is there any glaring error in that query?

回答1:

Look at this part:

WHERE () AND

() is not a valid WHERE clause.

来源：https://stackoverflow.com/questions/3152469/syntax-error-in-automatically-formed-sql-query