This question already has answers here:
Transposing Dynamic Columns to Rows
(2 answers)
How can I return pivot table output in MySQL?
(10 answers)
Closed 5 years ago.
I have a storage application that stores data on change, about 200 columns with a time stamp and ID.
What I am trying to do is format each row into a table layout.
Raw data:
Here is how I would like to return the data:
I am new to MySQL so I apologize if this is an obvious answer, any help is appreciated!
Related
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How to create multiple one to one's
(3 answers)
How would inheritance be used in MySQL?
(4 answers)
Closed 2 years ago.
I am currently working on a small project in mySQL.I have a table called employee;ID, FirstName, ...)
I want to create a sub entity of this employee table and name it chef. chef has a special attributes: chef( cuisine, shift type,..)
What is the best way to achieve this? Thanks
This question already has an answer here:
Count all record in table in yii2 without where clause
(1 answer)
Closed 5 years ago.
I am new in Yii framework.
I have a page frontend/site/home.php, I want to display the number of records from companies table at home.php.(DB name yii2advanced)
Simply use count function to get count of records from a table, like -
$count = YourModel::find()->count();
echo $count;
This question already has answers here:
Mysql remove the specific word in comma seperated string
(6 answers)
Is storing a delimited list in a database column really that bad?
(10 answers)
Closed 5 years ago.
I already read the mysql wiki but didn't get an answer how to delete specific entries from all rows in a column.
Let's say there's a column Example.
In Example the .php wrote: "One, Two, Three, Four, Five, Six"
And you want to delete Two and Six in all rows of the column.
I don't get it how to delete those entries without having multiple commas. (Multiple commas = "One,, Three")
Thanks in Advance
This question already has answers here:
How do I make a row generator in MySQL?
(9 answers)
Closed 7 years ago.
I'm facing a scenario, where if the input is 10, I want a sequence of numbers (1,2,3,...10).
In oracle the level function provides that function, and I wish to know how to perform the same task in MySQL.
Thanks...
You can Use this query in mysql
SET #rownr=0;
SELECT #rownr:=#rownr+1 AS `rowNumber` FROM `tablename` limit 10
the above query generate sequence of that number upto the limit.
Tablename is any of your table in db
This question already has answers here:
remove all numeric characters from column mysql
(2 answers)
Closed 9 years ago.
I have millions of data in MySQL table, now I need to update one particular column of the table with only non-numeric characters. That is I need to remove all numbers from that column. The row wont be deleted, only updated with only non-numeric values.
I need some efficient way to achieve this.
Calling 10 times replace doesn't look good.
Thanks,
Ashish
For mysql, you just have to replace everything:
Replace(Replace(Replace(Replace(Replace(Replace(Replace(Replace(Replace(Replace(column,'9',''),'8',''),'7',''),'6',''),'5',''),'4',''),'3',''),'2',''),'1',''),'0','');