mysql-workbench

问题 I have a query that looks like this: SELECT count(*) ,date_format(created, '%d/%m/%y ') as datecreated FROM mimesi_indexer.meta_served_clips GROUP BY DATE(created) ORDER BY created ASC The problem is that some dates are missing in the database. I need to have those dates into the results showing the date's count as 0 and the date itself. How can I do it please? Thanks EDIT: count(*) is in the left column created is the right one a) data: 2610, 11/04/17 1332, 12/04/17 2082, 26/04/17 3584, 27

问题 How do I show a message from a stored procedure? What is the right syntax to display a message saying whether or not rows exist? In SQL Server it's PRINT to show a message bat in WORKBENCH... CREATE PROCEDURE `new_proced` ( in myid int(3) ) BEGIN if not exists (select id from table where id = myid) then show message 'Row no exists'; else show message 'Row exists'; end if; END 回答1: Not entirely sure why you would want to do something like that, but you could do something like this: ... then

问题 I have MySQL workbench installed on my computer and always worked correctly. Now try to run it and do not run. Gives an error: MySql Workbench has encountered a problem External component has throw an exception. We are sorry for the inconvenience but an unexpected exception has been raised by one of the MySQL Workbench modules. In order to fix this issue we would kindly ask you to file a bug report. You can do that by pressing the [Report Bug] button below. Please make sure to include a

问题 I am getting an 'access denied' error trying to connect to a Google Cloud SQL MySQL instance with ssl in DBeaver. I am able to connect to the server with the same ssl credentials in MySQL Workbench connect without ssl credentials (through user name / password) in DBeaver. Any suggestions why this might be? 回答1: You can add connection with SSL support, at least in latest version for today (5.1). Create connection as usual, then skip testing and go to next step, then on SSL tab select "Require

问题 I'm trying to set the lower_case_table_name value to 2 , since it is a Windows server. But when I start MySQL Workbench and connect to my server I get the following error: A server is in a system that does not properly support the selected lower_case_table_names option value. Shouldn't a Windows server support a value of 2 ? I'm running MySQL 5.6 on Windows Server 2012 and using MySQL Workbench 6.3. 回答1: You can safely ignore this error. I recently installed MySQL on a new Windows computer

问题 This question already has answers here : CHECK constraint in MySQL is not working (8 answers) Closed 10 months ago . Here I want to create 2 CHECK constraint before the record insert to the database. ALTER TABLE SubjectEnrollment ADD CONSTRAINT register CHECK (register <= classSize AND register >=0), ADD CONSTRAINT available CHECK (available <= classSize AND available >= 0); register attribute should not more than classSize attribute and less than 0. available attribute should not more than

问题 Because of loadshading issue, one of the table in my database got currupted. I dropped the table and now I want to create the table again. I'm getting this error : ERROR 1813: Tablespace for table ' zorkif . sys_user_accounts ' exists. Please DISCARD the tablespace before IMPORT. SQL Statement: CREATE TABLE `zorkif`.`sys_user_accounts` ( `UserID` INT NOT NULL AUTO_INCREMENT , PRIMARY KEY (`UserID`) , UNIQUE INDEX `UserID_UNIQUE` (`UserID` ASC) ) What is tablespace and how to discard this

问题 Because of loadshading issue, one of the table in my database got currupted. I dropped the table and now I want to create the table again. I'm getting this error : ERROR 1813: Tablespace for table ' zorkif . sys_user_accounts ' exists. Please DISCARD the tablespace before IMPORT. SQL Statement: CREATE TABLE `zorkif`.`sys_user_accounts` ( `UserID` INT NOT NULL AUTO_INCREMENT , PRIMARY KEY (`UserID`) , UNIQUE INDEX `UserID_UNIQUE` (`UserID` ASC) ) What is tablespace and how to discard this

问题 Cannot connect to MySQL Workbench on mac. I get the following error: Could not connect, server may not be running. Can't connect to MySQL server on '127.0.0.1' (61) The help would be appreciated. Thank You! 回答1: Go to System preferences -> MySql and check the state of your MySql instance. 回答2: Ran into a similar issue and my problem was that MySQL installed itself configured to run on non-default port. I do not know the reason for that, but to find out which port MySQL is running on, run the

问题 In foreign key options on update and on delete. What does each field [Restrict, Cascade, Set Null, No Action] do? 回答1: If you take one by one : For both update and delete : if you try to update / delete the parent row : Restrict : Nothing gonna be delete if there is a child row Cascade : the child row will be delete / update too Set Null : the child column will be set to null if you delete the parent No action : The child row will not be concern of the delete / update 回答2: The table