Mysql: How to get every rows that have more than a certain number of decimal after the dot

Question

I have a table that contains float values.

table

+   id   |  value  |
+--------|---------|
+   1    | 19.22   |
+   2    | 32.333  |
+   3    | 1.         


        

Answer 1

Try this:

select value, LEN(value) - CHARINDEX('.', value) as DecimalCount from Table
where LEN(value) - CHARINDEX('.', value) > 2

NOTE: I'm not using mySQL, I have MSSQL. let me know if this works for you - just noticed you asked for a mySQL solution.

UPDATE: Felt bad for answering for the wrong platform. A bit of research got me this for mySQL:

select * from Table
where LENGTH(SUBSTRING_INDEX(value, '.', -1)) > 2

Answer 2

Cast the value column as a varchar and use string comparison.

Answer 3

This worked for me:

SELECT  *
FROM table
WHERE column <> ROUND (column,2)

or:

SELECT  *
FROM table
WHERE column <> CAST (column AS DECIMAL(36,2))

Answer 4

SELECT * FROM table t WHERE floor(t.columnname)!=t.columnname

Answer 5

This regex (MySQL 5.0+) worked for me, based on the data you provided:

SELECT t.* 
  FROM YOUR_TABLE t 
 WHERE t.`value` REGEXP '[0-9]+.[0-9][0-9][0-9]+'

Reference:

• http://www.regular-expressions.info/

Answer 6

This worked for me

SELECT * 
FROM `table` 
WHERE LENGTH(SUBSTR(`value`,INSTR(`value`,"."))) >3

Counting the decimal .01 is 3, .011 is 4