Enum Rule 

pub enum Rule {
    reserved_keyword,
    WHITESPACE,
    identifier,
    number,
    string,
    comparison_op,
    logical_op,
    aggregate_func,
    order_type,
    select_stmt,
    agg_field,
    where_condition,
    from_clause,
    join_clause,
    where_clause,
    group_by_clause,
    order_by_clause,
    limit_clause,
}

Variants

reserved_keyword

Reserved SQL keywords that cannot be used as identifiers.

WHITESPACE

Whitespace characters, including spaces, tabs, and newlines.

identifier

Valid SQL identifier, which cannot be a reserved keyword and must start with a letter, followed by letters, numbers, or underscores.

number

Numeric literals, consisting of one or more digits.

string

String literals, enclosed in double quotes.

comparison_op

Comparison operators for SQL conditions.

logical_op

Logical operators used to combine conditions in WHERE clauses.

aggregate_func

Supported SQL aggregate functions.

order_type

Specifies sorting order: ascending or descending.

select_stmt

Complete SQL SELECT statement syntax, including optional clauses.

agg_field

Aggregate field in SELECT, which can include a function or just an identifier.

where_condition

Single WHERE clause condition with an identifier, comparison operator, and value, which can be a string or a number.

from_clause

FROM clause, specifying the primary table for the query.

join_clause

JOIN clause, specifying the table to join and the columns for the join condition.

where_clause

WHERE clause, allowing multiple conditions joined by logical operators.

group_by_clause

GROUP BY clause, specifying columns for grouping results.

order_by_clause

ORDER BY clause, specifying columns and order for sorting results.

limit_clause

LIMIT clause, specifying the maximum number of results.

Implementations

impl Rule

pub fn all_rules() -> &'static [Rule]

Trait Implementations

impl Clone for Rule

fn clone(&self) -> Rule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Rule

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

Formats the value using the given formatter.

impl Hash for Rule

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 Rule

fn cmp(&self, other: &Rule) -> 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 Parser<Rule> for Grammar

fn parse<'i>(rule: Rule, input: &'i str) -> Result<Pairs<'i, Rule>, Error<Rule>>

Parses a &str starting from rule.

impl PartialEq for Rule

fn eq(&self, other: &Rule) -> 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 Rule

fn partial_cmp(&self, other: &Rule) -> 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 Copy for Rule

impl Eq for Rule

impl StructuralPartialEq for Rule