Remove all zero dates from MySQL database across all Tables

Question

I have plenty of tables in MySQL which which contains zero date in dateTime column 0000-00-00 00:00:00

Using some sort of admin settings, Is it possibl

Answer 1

You have two options.

Option One - In the programming language of your choice (you can even do this with Stored Procedures):

1. Loop through your INFORMATION_SCHEMA, probably COLUMNS and build a query to get back the tables you need to affect, i.e.

-

SELECT TABLE_NAME FROM INFORMATION_SCHEMA.COLUMNS 
WHERE COLUMN_NAME='date' AND TABLE_SCHEMA=''

or maybe even better

SELECT TABLE_NAME,COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS 
WHERE COLUMN_NAME in ('timestamp','date','datetime')
AND TABLE_SCHEMA=''

1. Store results and then loop through them. Each loop, create a new query. In MySQL that would be a Stored Procedure with Prepared Statements, AKA:

-

@string = CONCAT("UPDATE ", @table_name, " SET ", @column_name, "='1-1-1900' WHERE ", @column_name, "=0000-00-00 00:00:00");

PREPARE stmt FROM @string; EXECUTE stmt;

That wouldn't be too tough to write up.

Option Two - Another example, while certainly more low tech, may be no less effective. After doing a mysqldump and before doing your export, you can do a simple search-replace in the file. Vim or any other text editor would do this quite expertly and would allow you to replace 0000-00-00 00:00:00 with 1-1-1900. Because you are almost definitely not going to find situations where you DON'T want that to be replaced, this could be the easiest option for you. Just throwing it out there!