Understanding 3 parameters in MySQL workbench Code Editor settings [duplicate] - mysql

This question already has answers here:
Are table names in MySQL case sensitive?
(5 answers)
Delimiters in MySQL
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How can I see the specific value of the sql_mode?
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Closed 2 years ago.
What do the following three settings mean in MySQL Workbench?
These three parameters are mentioned briefly on the General Editor Settings, but I'm wondering what might be an example of their usage. For example:
SQL Identifiers are Case Sensitive: Enabled by default. Whether to treat identifiers separately if their names differ only in letter case.
Does this mean, for example that:
SELECT * from main_iteminstance
is different from:
SELECT * FROM main_iteminstance
The answer is no when I tried both, but isn't FROM a sql identifier, so what would this setting mean exactly?

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For example:
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MySQL: Set case sensitive as default [duplicate]

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I am using MySQL on Windows 10.
Is there any way to set case sensitive as default?
To have case sensitivity in any query, whether it's column name or value name.

I don't really knows about case sensitive that you meaning above
But I though this answer help you out

In MySQL is there any function like "level" in Oracle [duplicate]

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.
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List of views in mysql [duplicate]

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I created some views in mysql but I don't quite remember their names. Is there a way to look them up as you would a table, i.e. (show tables;)?

This is a duplicate question with an answer
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Need to remove numeric data from row in MySQL [duplicate]

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','');