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Table

Struct Table 

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pub struct Table {
    pub name: &'static str,
    pub columns: &'static [Column],
    pub csv: &'static str,
}
Expand description

A table in the Foodmart data set.

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§name: &'static str

The table name, and also the base name of its CSV file.

§columns: &'static [Column]

The table’s columns, in CSV column order.

§csv: &'static str

The contents of the table’s CSV file, including the header row.

Implementations§

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impl Table

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pub fn column_names(&self) -> Vec<&'static str>

Returns the table’s column names, in CSV column order.

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pub fn header(&self) -> Vec<Cow<'static, str>>

Returns the header row of the CSV file, as field names.

This is always equal to Table::column_names; the crate’s tests check that it is.

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pub fn rows(&self) -> Rows ⓘ

Returns the table’s data rows. The header row is skipped.

An empty field represents SQL NULL, and is yielded as an empty string; consult Column::not_null to tell an empty string from a null.

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pub fn create_table_sql(&self) -> String

Returns a CREATE TABLE statement for the table, with identifiers quoted using the SQL standard double-quote.

let table = foodmart_data::find("days").unwrap();
assert_eq!(
    table.create_table_sql(),
    r#"CREATE TABLE "days" ("day" INTEGER NOT NULL, "week_day" VARCHAR(30) NOT NULL)"#);
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pub fn insert_sql(&self, row: &[Cow<'_, str>]) -> String

Returns an INSERT statement for one row, as literal SQL.

Values of character, date and timestamp columns are quoted; numeric and boolean values are not; an empty field becomes NULL.

§Panics

Panics if row does not have one value per column.

Trait Implementations§

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impl Clone for Table

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fn clone(&self) -> Table

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for Table

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impl Debug for Table

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Eq for Table

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impl PartialEq for Table

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fn eq(&self, other: &Table) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for Table

Auto Trait Implementations§

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impl Freeze for Table

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impl RefUnwindSafe for Table

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impl Send for Table

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impl Sync for Table

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impl Unpin for Table

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impl UnsafeUnpin for Table

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impl UnwindSafe for Table

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.