How can I translate in a MySQL table?
Auto detect language in column X,
translate column X in English and add in column Y
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is it possible to go through the whole database and where value equals value to change it to other value at any key name??
like go through the tables and change the value at any key.
Database>
table1>
somekey> x
table2>
otherkey> x
now I want to change the x at any key to a y value
I am in need of a Mysql Column which will contain values in a certain range. For example, I have a column name called "apiCallCount" value of this column should within a range of 1 to 1000. Also, we needed to make this column as auto incremented(please note the table has a primary key which is auto incremented)
That is, the value of the column("apiCallCount") will be "1" when you insert the first row, it should continue to increment till 1000 as each insertion happen. Next insertion after the value become 1000 should create a row with the value "1" in "apiCallCount" column.
Honourable Dipu, try to use RANGE_MAX column assign it to the number that you wish to be the maximum (which is 1000 according to you query) then make the field to auto increment while you are creating you database.
I am using jdbc to insert and getvalues form my database.
Suppose my sql table is like this-
NAME | STATE
x in
y in
z in
x out
y out
z out
x in
y in
As you can see there are similar values in the above table. I know how to normally get the value from table but i want to get the most recent added value of lets say 'z' which was added to the table or the last entry of z from the above table how can i get it?
Another column of type timestamp is there but when you are getting the value you only have name 'z' you don't know when the last entry was in the table
SELECT * FROM TABLE ORDER BY `timestamp` DESC LIMIT 1
Basically I want to make a column auto_increment based on another column's value. For instance I have column A and column B. Column A is an int 1-100 and column b is the auto_incrementer. If I do something with Column A = 2 column b's incrementer value needs to increase by 1. Let's say its 5 now. Now I change something with Column A = 8 and B changes from 11 to 12. My question is how can I implement something like this without creating a lot of tables? Or is creating a lot of tables the most efficient method?
You need to create a trigger, which updates column B based on the value in column A. The trigger function will handle all computations required for the value of column B
I have a CHAR type column in table A, and all the strings in the column correspond one-to-one to integers in table B. What I want is to replace all of the strings in the CHAR column of table A with their corresponding INTs from table B. I know I could write a script that makes a new column and populates it with the relevant data, but it seems like there should be an easier way to do it from within MySQL. Is there a way to do this with a UPDATE or ALTER TABLE statement?
Well, simply UPDATING the column with the int value will work:
UPDATE table1
SET table1.column = table2.column
WHERE <condition>
but the column will still be a CHAR column, so afterwards you still have to do an ALTER TABLE to convert the column into an INT.
Though this should not make a problem with casting I would prefer to add a new INT column, fill it with an UPDATE similar to the one above and then remove the old column - always assuming the table is not that big that the repeated ALTER TABLE locks for too long.