Struct sql_migration_sim::ast::Declare

pub struct Declare {
    pub names: Vec<Ident>,
    pub data_type: Option<DataType>,
    pub assignment: Option<DeclareAssignment>,
    pub declare_type: Option<DeclareType>,
    pub binary: Option<bool>,
    pub sensitive: Option<bool>,
    pub scroll: Option<bool>,
    pub hold: Option<bool>,
    pub for_query: Option<Box<Query>>,
}

A DECLARE statement. Postgres Snowflake BigQuery

Examples:

DECLARE variable_name := 42
DECLARE liahona CURSOR FOR SELECT * FROM films;

Fields

names: Vec<Ident>

The name(s) being declared. Example: `DECLARE a, b, c DEFAULT 42;

data_type: Option<DataType>

Data-type assigned to the declared variable. Example: `DECLARE x INT64 DEFAULT 42;

assignment: Option<DeclareAssignment>

Expression being assigned to the declared variable.

declare_type: Option<DeclareType>

Represents the type of the declared variable.

binary: Option<bool>

Causes the cursor to return data in binary rather than in text format.

sensitive: Option<bool>

None = Not specified Some(true) = INSENSITIVE Some(false) = ASENSITIVE

scroll: Option<bool>

None = Not specified Some(true) = SCROLL Some(false) = NO SCROLL

hold: Option<bool>

None = Not specified Some(true) = WITH HOLD, specifies that the cursor can continue to be used after the transaction that created it successfully commits Some(false) = WITHOUT HOLD, specifies that the cursor cannot be used outside of the transaction that created it

for_query: Option<Box<Query>>

FOR <query> clause in a CURSOR declaration.

Trait Implementations

impl Clone for Declare

fn clone(&self) -> Declare

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Declare

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

Formats the value using the given formatter.

impl Display for Declare

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

Formats the value using the given formatter.

impl Hash for Declare

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

where __H: Hasher,

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 Declare

fn cmp(&self, other: &Declare) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for Declare

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Declare

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Eq for Declare

impl StructuralPartialEq for Declare