# Q3

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This metric is not supported in MySQL.
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### Definition

Quartiles divide all non-NULL values in the column within the latest partition into four equal parts based on value: Q3 represents the 75th percentile.

### Source

data (numeric)

### Computation

* For data sources supporting exact percentiles (e.g. PostgreSQL’s `PERCENTILE_DISC(0.75)`), Soda uses that function.
* For data sources that provide approximations (such as BigQuery, SQLServer, Redshift and Trino), Soda uses those approximated values.

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