Struct parquet_format_async_temp::Statistics[][src]

pub struct Statistics {
    pub max: Option<Vec<u8>>,
    pub min: Option<Vec<u8>>,
    pub null_count: Option<i64>,
    pub distinct_count: Option<i64>,
    pub max_value: Option<Vec<u8>>,
    pub min_value: Option<Vec<u8>>,
}
Expand description

Statistics per row group and per page All fields are optional.

Fields

max: Option<Vec<u8>>

DEPRECATED: min and max value of the column. Use min_value and max_value.

Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix.

These fields encode min and max values determined by signed comparison only. New files should use the correct order for a column’s logical type and store the values in the min_value and max_value fields.

To support older readers, these may be set when the column order is signed.

min: Option<Vec<u8>>null_count: Option<i64>

count of null value in the column

distinct_count: Option<i64>

count of distinct values occurring

max_value: Option<Vec<u8>>

Min and max values for the column, determined by its ColumnOrder.

Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix.

min_value: Option<Vec<u8>>

Implementations

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.