How to Sort String Numbers in MySQL?
Published on 2024-11-26
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Sorting String Numbers in MySQL
Question:
How can I sort a column of type VARCHAR that stores numeric values as strings in MySQL? For example, I have a column containing "17.95", "199.95", and "139.95" and need to sort them as numbers.
Answer:
The most efficient and straightforward method to achieve this is by using multiplication by 1:
SELECT * FROM tbl ORDER BY number_as_char * 1
This method has several advantages:
- It avoids potential precision issues caused by casting.
- It can handle non-numeric data gracefully, ignoring it during sorting.
- It extracts the numeric part from alphanumeric strings, allowing for accurate sorting.
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