Enum PipeOperator

pub enum PipeOperator {
    Limit {
        expr: Expr,
        offset: Option<Expr>,
    },
    Where {
        expr: Expr,
    },
    OrderBy {
        exprs: Vec<OrderByExpr>,
    },
    Select {
        exprs: Vec<SelectItem>,
    },
    Extend {
        exprs: Vec<SelectItem>,
    },
    Set {
        assignments: Vec<Assignment>,
    },
    Drop {
        columns: Vec<Ident>,
    },
    As {
        alias: Ident,
    },
    Aggregate {
        full_table_exprs: Vec<ExprWithAliasAndOrderBy>,
        group_by_expr: Vec<ExprWithAliasAndOrderBy>,
    },
}

Pipe syntax, first introduced in Google BigQuery. Example:

FROM Produce
|> WHERE sales > 0
|> AGGREGATE SUM(sales) AS total_sales, COUNT(*) AS num_sales
   GROUP BY item;

See https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#pipe_syntax

Variants

Limit

Limits the number of rows to return in a query, with an optional OFFSET clause to skip over rows.

Syntax: |> LIMIT <n> [OFFSET <m>]

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#limit_pipe_operator

Fields

expr: Expr

offset: Option<Expr>

Where

Filters the results of the input table.

Syntax: |> WHERE <condition>

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#where_pipe_operator

Fields

expr: Expr

OrderBy

ORDER BY <expr> [ASC|DESC], ...

Fields

exprs: Vec<OrderByExpr>

Select

Produces a new table with the listed columns, similar to the outermost SELECT clause in a table subquery in standard syntax.

Syntax |> SELECT <expr> [[AS] alias], ...

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#select_pipe_operator

Fields

exprs: Vec<SelectItem>

Extend

Propagates the existing table and adds computed columns, similar to SELECT *, new_column in standard syntax.

Syntax: |> EXTEND <expr> [[AS] alias], ...

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#extend_pipe_operator

Fields

exprs: Vec<SelectItem>

Set

Replaces the value of a column in the current table, similar to SELECT * REPLACE (expression AS column) in standard syntax.

Syntax: |> SET <column> = <expression>, ...

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#set_pipe_operator

Fields

assignments: Vec<Assignment>

Drop

Removes listed columns from the current table, similar to SELECT * EXCEPT (column) in standard syntax.

Syntax: |> DROP <column>, ...

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#drop_pipe_operator

Fields

columns: Vec<Ident>

As

Introduces a table alias for the input table, similar to applying the AS alias clause on a table subquery in standard syntax.

Syntax: |> AS <alias>

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#as_pipe_operator

Fields

alias: Ident

Aggregate

Performs aggregation on data across grouped rows or an entire table.

Syntax: |> AGGREGATE <agg_expr> [[AS] alias], ...

Syntax:

|> AGGREGATE [<agg_expr> [[AS] alias], ...]
GROUP BY <grouping_expr> [AS alias], ...

See more at https://cloud.google.com/bigquery/docs/reference/standard-sql/pipe-syntax#aggregate_pipe_operator

Fields

full_table_exprs: Vec<ExprWithAliasAndOrderBy>

group_by_expr: Vec<ExprWithAliasAndOrderBy>

Trait Implementations

impl Clone for PipeOperator

fn clone(&self) -> PipeOperator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PipeOperator

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PipeOperator

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for PipeOperator

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

Formats the value using the given formatter.

impl Hash for PipeOperator

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for PipeOperator

fn cmp(&self, other: &PipeOperator) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for PipeOperator

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for PipeOperator

fn partial_cmp(&self, other: &PipeOperator) -> Option<Ordering>

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

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for PipeOperator

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Visit for PipeOperator

fn visit<V: Visitor>(&self, visitor: &mut V) -> ControlFlow<V::Break>

impl VisitMut for PipeOperator

fn visit<V: VisitorMut>(&mut self, visitor: &mut V) -> ControlFlow<V::Break>

impl Eq for PipeOperator

impl StructuralPartialEq for PipeOperator