How to write background colour codes in sql server

select concat('', your_column, '') from your_table

Note, that that only works if you output to a html page. I suggest you use a regular query and colour it elsewhere in your code.

Without you showing your code, I cannot guess how you are using the sql query or showing the output.

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I need to show a numeric column as coloured how?

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HTML is just text. You can CONCAT() that in your query if you want to.

Personally, I'd use backend code for such display rules.

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