MySQL doesn't yet support Limit&& in/all?
my query is as follow:
SELECT * FROM `C_Institute` WHERE `ID` IN (SELECT `instituteID` FROM `C_Faculty` WHERE `ID` IN (SELECT `facultyID` FROM `C_EducationalGroup` WHERE `ID` IN (SELECT `educationalGroupID` FROM `C_StudyField` WHERE `ID` IN (SELECT `studyFieldID` FROM `b_PersonEmployment` WHERE `personID`=1 ORDER BY `startDate` limit 1) )));
but mysql not support
in on subquery. I don't know how I can write this query.
can anyone help me please?
thanks in advance
You may rewrite this query a series of joins:
SELECT c1.* FROM C_Institute c1 INNER JOIN C_Faculty c2 ON c1.ID = c2.instituteID INNER JOIN C_EducationalGroup c3 ON c2.ID = c3.facultyID INNER JOIN C_StudyField c4 ON c3.ID = c4.educationalGroupID INNER JOIN b_PersonEmployment b ON c4.ID = b.studyFieldID WHERE b.personID = 1 ORDER BY b.startDate LIMIT 1;
MySQL 8.0 Reference Manual :: B.3.1 Server Error , Message: Table handler doesn't support NULL in given index. The MySQL server is running with the %s option so it cannot execute this Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist These messages often occur when the MySQL base or data directories are installed in different locations than the default locations ( C:\Program Files\MySQL\MySQL Server 8.0 and C:\Program Files\MySQL\MySQL Server 8.0\data , respectively).
Assuming ID in each table is referring to the other table then,
Try this and let me know :
select * from C_Institute c join C_Faculty f on c.ID=F.instituteID left join C_EducationalGroup e on f.ID=e.facultyID left join C_StudyField sf on e.ID=sf.educationalGroupID left join b_PersonEmployment p on sf.ID=p.studyFieldID where p.personID=1 order by p.startDate limit 1;
Also, share your tables description for more clues
B.4.2.12 Can't create/write to file, If you get an error of the following type for some queries, it means that MySQL cannot create a temporary file for the result set in the temporary directory: Can't Hi, I have found errors from /var/log/syslog using following command grep -i 'mysql' /var/log/syslog SEP 17 19:52:54 dbametrix.com mysqld: 100409 19:52:54 InnoDB: Started; log sequence number 0 43655 SEP 17 19:52:54 dbametrix.com mysqld: 100409 19:52:54 [ERROR] Can't start
thanks for all your answer. but I think join is not good way to solve this problem. I've done it by two query(maybe not good idea but better than join):
SET @studyFieldID =(SELECT `studyFieldID` FROM `b_PersonEmployment` WHERE `personID`=1 ORDER BY `startDate` limit 1); SELECT * FROM `C_Institute` WHERE `ID` IN (SELECT `instituteID` FROM `C_Faculty` WHERE `ID` IN (SELECT `facultyID` FROM `C_EducationalGroup` WHERE `ID` IN (SELECT `educationalGroupID` FROM `C_StudyField` WHERE `ID`=@studyFieldID )));
MySQL 5.7 Reference Manual :: B.3.1 Server Error , InnoDB reports this error when a table cannot be created. If the error message refers to error 150, table creation failed because a foreign key constraint was not First try to restart your MySQL server – If the error has happened due to improper server shut down or MySQL service related errors, we restart the service and check if it fixes the issue. If the service doesn’t start properly, we further investigate and fix the error. Try to Repair the tables:
MySQL 8.0 Reference Manual :: B.4.2.2 Can't connect to , If that does not work, it connects to the TCP/IP port. You can force the use of named pipes on Windows by using . as the host name. The error (2002) Can't sudo mysql_ssl_rsa_setup --datadir /var/lib/mysql The datadir may be different in your case. Then do. sudo -i cd /var/lib/mysql chown mysql:mysql ./* This will set the permissions for the generated cert and key files right. Next you can start both apparmor and then mysql. This fixed the issue in my case.
MySQL Restrictions and Limitations :: 5 Restrictions on Subqueries, In general, you cannot modify a table and select from the same table in a This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'. I've recently been working on a few of our older websites with newer MySQL installations and am coming across the following error: SQLSTATE[HY000]: General error: 1364 Field 'delivery_address_id' doesn't have a default value This is caused by MySQL having a strict mode set which won't allow INSERT or UPDATE commands with empty fields where the schema doesn't have a default value set. There are
MySQL > Table doesn't exist. But it does (or it should), Just in case anyone still cares: I had the same issue after copying a database directory directly using command cp -r /path/to/my/database Re: MySQL doesn't start[solved] I have also tried uninstalling and re-installing to no avail. lovelock# pacman -Rdd mysql Remove (1): mysql-5.5.18-1 Total Removed Size: 77.83 MB Do you want to remove these packages?