Struct JsonTextPath 

pub struct JsonTextPath { /* private fields */ }

Left-hand operand of a json_get_text filter — chain a comparison method (.eq, .lt, .is_null, …) to produce a FilterExpr.

Implementations

impl JsonTextPath

pub fn eq<V>(self, value: V) -> FilterExpr

where V: IntoSqlValue,

pub fn ne<V>(self, value: V) -> FilterExpr

where V: IntoSqlValue,

pub fn lt<V>(self, value: V) -> FilterExpr

where V: IntoSqlValue,

pub fn lte<V>(self, value: V) -> FilterExpr

where V: IntoSqlValue,

pub fn gt<V>(self, value: V) -> FilterExpr

where V: IntoSqlValue,

pub fn gte<V>(self, value: V) -> FilterExpr

where V: IntoSqlValue,

pub fn is_null(self) -> FilterExpr

col ->> 'key' IS NULL — the JSON document either lacks the key, or stores it as JSON null. (PG and SQLite agree here.)

pub fn is_not_null(self) -> FilterExpr

col ->> 'key' IS NOT NULL — the JSON document has the key with a non-null primitive value. Note: a PG ? test (use super::field_ref::FieldRef::json_has_key) treats JSON null as a present key where this method does not.

Trait Implementations

impl Clone for JsonTextPath

fn clone(&self) -> JsonTextPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsonTextPath

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

Formats the value using the given formatter.