Struct ColumnDef 

pub struct ColumnDef {

    pub column_ref: ColumnRef,
    pub column_type: BTreeMap<&'static str, &'static str>,
    pub value: Value,
    pub nullable: bool,
    pub default: DefaultValueType,
    pub primary_key: PrimaryKeyType,
    pub clustering_key: bool,
    pub unique: bool,
    pub references: Option<ColumnRef>,
    pub on_delete: Option<Action>,
    pub on_update: Option<Action>,
    pub passive: bool,
    pub comment: &'static str,
}

Column specification.

Fields

column_ref: ColumnRef

Column identity.

column_type: BTreeMap<&'static str, &'static str>

Explicit SQL types.

value: Value

Type descriptor.

nullable: bool

Is nullable.

default: DefaultValueType

Default expression.

primary_key: PrimaryKeyType

Primary key role.

clustering_key: bool

Clustering key (relevant for ScyllaDB / Cassandra).

unique: bool

Single-column unique constraint.

references: Option<ColumnRef>

Foreign key target.

on_delete: Option<Action>

On delete action.

on_update: Option<Action>

On update action.

passive: bool

Exclude from INSERTs.

comment: &'static str

Comment.

Implementations

impl ColumnDef

pub fn name(&self) -> &str

Column name.

pub fn table(&self) -> &str

Table name.

pub fn schema(&self) -> &str

Schema name.

Trait Implementations

impl Debug for ColumnDef

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

Formats the value using the given formatter.

impl Default for ColumnDef

fn default() -> ColumnDef

Returns the “default value” for a type.

impl Expression for ColumnDef

fn write_query( &self, writer: &dyn SqlWriter, context: &mut Context, out: &mut DynQuery, )

Render the expression into SQL.

fn accept_visitor( &self, matcher: &mut dyn ExpressionVisitor, writer: &dyn SqlWriter, context: &mut Context, out: &mut DynQuery, ) -> bool

Match the expression.

fn as_identifier(&self, context: &mut Context) -> String

Convert expression to an identifier string.

impl<'a> From<&'a ColumnDef> for &'a ColumnRef

fn from(value: &'a ColumnDef) -> Self

Converts to this type from the input type.

impl OpPrecedence for ColumnDef

fn precedence(&self, _writer: &dyn SqlWriter) -> i32

Lower numbers bind weaker, writers parenthesize when child precedence <= operator precedence.