Data cleaning: Difference between revisions
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mNo edit summary Tags: Mobile edit Mobile web edit |
Tags: Mobile edit Mobile web edit |
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* If the data was imported from Excel, you should notice the 15 digit precision issue. | * If the data was imported from Excel, you should notice the 15 digit precision issue. | ||
=== Check if the column value is | === Check if the column value is numeric === | ||
MySQL: | MySQL: | ||
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* [https://stackoverflow.com/questions/75704/how-do-i-check-to-see-if-a-value-is-an-integer-in-mysql How do I check to see if a value is an integer in MySQL? - Stack Overflow] | * [https://stackoverflow.com/questions/75704/how-do-i-check-to-see-if-a-value-is-an-integer-in-mysql How do I check to see if a value is an integer in MySQL? - Stack Overflow] | ||
Check if a value is integer which may contains comma and dot symbols e.g. 1,234.567 or 3.414 | |||
* Find the records which the value of `my_column` is numeric values entirely {{code | code = SELECT * FROM `my_table` WHERE `my_column` REGEXP '^[0-9,\.]+$'}} | |||
Check if a value is NOT integer | Check if a value is NOT integer | ||