Struct QueryMetadata 

pub struct QueryMetadata {
    pub tables: HashSet<String>,
    pub columns: HashSet<String>,
    pub aliases: HashMap<String, String>,
    pub functions: HashSet<String>,
    pub aggregates: HashSet<String>,
    pub joins: Vec<JoinInfo>,
}

Metadata extracted from SQL query parsing containing tables, columns, functions, etc.

Fields

tables: HashSet<String>

Set of table names referenced in the query

columns: HashSet<String>

Set of column names referenced in the query

aliases: HashMap<String, String>

Map of table/column aliases (alias -> original name)

functions: HashSet<String>

Set of function names used in the query

aggregates: HashSet<String>

Set of aggregate function names (SUM, COUNT, AVG, etc.)

joins: Vec<JoinInfo>

List of JOIN operations with their details

Trait Implementations

impl Clone for QueryMetadata

fn clone(&self) -> QueryMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryMetadata

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

Formats the value using the given formatter.

impl Default for QueryMetadata

fn default() -> QueryMetadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for QueryMetadata

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for QueryMetadata

fn eq(&self, other: &QueryMetadata) -> 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 Serialize for QueryMetadata

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for QueryMetadata