mysql-workbench

问题 I have tried to re-install, but still cant open workbench. This is the error I get: Process: MySQLWorkbench [3352] Path: /Applications/MySQLWorkbench.app/Contents/MacOS/MySQLWorkbench Identifier: com.oracle.workbench.MySQLWorkbench Version: 8.0.23.CE (1) Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: MySQLWorkbench [3352] User ID: 501 Date/Time: 2021-01-19 08:21:33.443 -0500 OS Version: macOS 11.1 (20C69) Report Version: 12 Bridge OS Version: 5.1 (18P3030) Anonymous UUID:

问题 I have tried to re-install, but still cant open workbench. This is the error I get: Process: MySQLWorkbench [3352] Path: /Applications/MySQLWorkbench.app/Contents/MacOS/MySQLWorkbench Identifier: com.oracle.workbench.MySQLWorkbench Version: 8.0.23.CE (1) Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: MySQLWorkbench [3352] User ID: 501 Date/Time: 2021-01-19 08:21:33.443 -0500 OS Version: macOS 11.1 (20C69) Report Version: 12 Bridge OS Version: 5.1 (18P3030) Anonymous UUID:

问题 I am working with MYSQL WORKBENCH. After forward engineer I got all my tables in phpadmin. But the reverse enginner transforms 1:1 to 1:n . How can I fix this? 回答1: I believe it's a limitation of the forward and reverse engineering processes in MySQL Workbench. The cardinality of the relationship should determine the type of index used for the generated foreign key. Hence a unique index (or a primary key, which is per definition unique) are needed for a cardinality of 1. A non-unique index

问题 I am working with MYSQL WORKBENCH. After forward engineer I got all my tables in phpadmin. But the reverse enginner transforms 1:1 to 1:n . How can I fix this? 回答1: I believe it's a limitation of the forward and reverse engineering processes in MySQL Workbench. The cardinality of the relationship should determine the type of index used for the generated foreign key. Hence a unique index (or a primary key, which is per definition unique) are needed for a cardinality of 1. A non-unique index

问题 Getting an Error Code: 1822. Failed to add the foreign key constraint. Missing index for constraint 'subject_ibfk_1' in the referenced table 'enrolment' when attempting to create the subject table. The problem is, the error does not occur on the previous table student . The data types are the same, and the primary keys are defined. This error occurs for both the enrolment and grade tables. create table enrolment( stud_id char(9) not null, subj_code char(8) not null, semester tinyint unsigned

问题 I have create a trigger which is create a dynamic query.and execute it i had tried 'EXECU q' but it does not work. how can i run/execute that dynamic query. BEGIN DECLARE a INT Default 0 ; DECLARE str VARCHAR(255); DECLARE q VARCHAR(500); SET q = 'insert into '+new.master_name+' values('; simple_loop: LOOP SET a=a+1; SET str = SPLIT_STRING(new.remarks,"|",a); SET q = CONCAT(q,str+','); SET q = LEFT(q, LENGTH(q) - 1); IF str='' THEN LEAVE simple_loop; END IF; END LOOP simple_loop; SET q =

问题 i have 1 table data buyer called order_match which contain coloumn createdby as the buyer, createdAt as the date of transaction, and order_status_Id as the order_status, if order_status_id (4,5,6,8) then the transaction are approved, so i want to count every differiante days of each buyer so i know the gap of each buyer to doing new transaction after the last transaction, so after that i can count the max day of the longest transaction gap, and the minimum day, and the Average of the buyer on

问题 I am getting an error when creating a foreign key. The error is 1822 and it says the following: Error Code: 1822. Failed to add the foreign key constraint. Missing index for constraint 'Changes_ibfk_4' in the referenced table 'Recipe' I have read similar question and the problem seems to be, that the column that we need to create a foreign key on, does not have same datatype as the column that is referenced to. However, I have no idea how the two columns are different to one another. Both are

问题 Every time I try to execute the query I get the following error: Error Code: 2013. Lost connection to MySQL server during query What I did is I changed the read time out to 600, but I still get the same problem. Any idea how to fix it? 来源： https://stackoverflow.com/questions/55975796/lost-connection-to-mysql-server-during-query-error-2013

问题 I am stuck here in connecting with RDS instance with MySQL workbench I getting following error Can't connect to MySQL server on 'visitorbook.cdokqvroltrt.us-west- 2.rds.amazonaws.com' (10060) I have configured my security group for inbound traffic from my IP for port 3306. 回答1: Use ssh tunnel through the EC2 instance with your pem file. No need to change the security group. If DB connection works form ec2 instance, then it will work from local machine as well. You can setup ssh tunneling