Ubuntu 16.04 (EASY): Find out where you are allowed to write Then, just write there Mac OSX: Mysql installed via MAMP Find out where you are allowed to write NULL means you’re screwed so you have to create the file “~/.my.cnf” Enable read/write for MySQL installed via MAMP (on Mac): open “MAMP” use spotlight click … Read more
You can reset your root password. Have in mind that it is not advisable to use root without password.
If you really need this you can achieve your goal with help of separate table for sequencing (if you don’t mind) and a trigger. Tables Now the trigger Then you just insert rows to table1 And you’ll have | ID | NAME | —————— | LHPL001 | Jhon | | LHPL002 | Mark | Here … Read more
If your file my.cnf (usually in the /etc/mysql/ folder) is correctly configured with you can check if mysql is running with the following command: try changing your permission to mysql folder. If you are working locally, you can try: that solved it for me
You can reset your root password. Have in mind that it is not advisable to use root without password.
I can’t quite get a grasp of MySQL’s DECIMAL. I need the row to be able to contain a number anywhere from 00.0001 to 99.9999. How would I structure it to work like so?
2 This question already has answers here: Operand Should Contain 1 Column – MySQL NOT IN (3 answers) Closed 7 years ago. I could find a lot of similar questions but no real solution for my problem. My SQL query: The error code I receive is If I just use the query in the parentheses … Read more
You’re getting this error because you’re trying to add/update a row to table2 that does not have a valid value for the UserID field based on the values currently stored in table1. If you post some more code I can help you diagnose the specific cause.
Reading this original article on The Code Project will help you a lot: Visual Representation of SQL Joins. Also check this post: SQL SERVER – Better Performance – LEFT JOIN or NOT IN?. Find original one at: Difference between JOIN and OUTER JOIN in MySQL.
I am using MySQL and MySQL Workbench 5.2 CE. When I try to concatenate 2 columns, last_name and first_name, it doesn’t work :