Category "mysql"

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

I'm working on getting my database to talk to my Java programs. Can someone give me a quick and dirty sample program using the JDBC? I'm getting a rather stup

Get specific row col values from mysql using vb 2012

I have one button retrieve I just want to get the database table "account" value by its row and col and display it in a textbox. I keep on getting errors on th

Error import mysql database

i export my database and export to another computer use phpmyadmin but it error, Static analysis: 2 errors were found during analysis. Unexpected character.

How to find the maximum count using mysql?

Please let me know what is wrong with the below command mysql> select max(count(*)) from emp1 group by name; ERROR 1111 (HY000): Invalid use of group functi

MySQL - How do I enter NULL?

In SQL, I know I can do: UPDATE TableA SET MyColumn=NULL But, how do I enter NULL into a cell graphically? I tried entering 'null' and 'NULL' and '' (nothing/e

MySQL - How do I enter NULL?

In SQL, I know I can do: UPDATE TableA SET MyColumn=NULL But, how do I enter NULL into a cell graphically? I tried entering 'null' and 'NULL' and '' (nothing/e

MySQL - How do I enter NULL?

In SQL, I know I can do: UPDATE TableA SET MyColumn=NULL But, how do I enter NULL into a cell graphically? I tried entering 'null' and 'NULL' and '' (nothing/e

What's the difference between " = null" and " IS NULL"?

What is the difference between "=null" and "IS NULL"? How are they used differently?

What's the difference between " = null" and " IS NULL"?

What is the difference between "=null" and "IS NULL"? How are they used differently?

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