Struct PgAttribute 

pub struct PgAttribute {

    pub attrelid: SmolStr,
    pub attname: SmolStr,
    pub atttypid: SmolStr,
    pub attnum: u16,
    pub atttypmod: Option<u32>,
    pub attndims: u16,
    pub attcompression: Option<PgAttributeAttcompression>,
    pub attnotnull: bool,
    pub atthasdef: bool,
    pub attidentity: Option<PgAttributeAttidentity>,
    pub attgenerated: Option<PgAttributeAttgenerated>,
    pub attisdropped: bool,
    pub attislocal: bool,
    pub attinhcount: u16,
    pub attcollation: Option<SmolStr>,
    pub attstattarget: Option<u16>,
    pub attacl: Option<Vec<AclItem<TableColumnAclPrivilege>>>,
    pub attoptions: Option<Vec<SmolStr>>,
    pub attfdwoptions: Option<Vec<SmolStr>>,
    pub description: Option<SmolStr>,
    pub seclabel: Option<SmolStr>,
    pub seclabel_provider: Option<SmolStr>,
    pub initprivs: Option<Vec<AclItem<TableColumnAclPrivilege>>>,
    pub initprivs_type: Option<PgAttributeInitprivsType>,
}

The DDL-only contents of pg_attribute

Fields

attrelid: SmolStr

oid (references pg_class.oid) The table this column belongs to

attname: SmolStr

name The column name

atttypid: SmolStr

oid (references pg_type.oid) The data type of this column (zero for a dropped column)

attnum: u16

int2 The number of the column. Ordinary columns are numbered from 1 up. System columns, such as ctid, have (arbitrary) negative numbers.

atttypmod: Option<u32>

int4 atttypmod records type-specific data supplied at table creation time (for example, the maximum length of a varchar column). It is passed to type-specific input functions and length coercion functions. The value will generally be -1 for types that do not need atttypmod.

attndims: u16

int2 Number of dimensions, if the column is an array type; otherwise 0. (Presently, the number of dimensions of an array is not enforced, so any nonzero value effectively means “it’s an array”.)

attcompression: Option<PgAttributeAttcompression>

char The current compression method of the column. Typically this is ‘\0’ to specify use of the current default setting (see default_toast_compression). Otherwise, ‘p’ selects pglz compression, while ‘l’ selects LZ4 compression. However, this field is ignored whenever attstorage does not allow compression.

attnotnull: bool

bool This represents a not-null constraint.

atthasdef: bool

bool This column has a default expression or generation expression, in which case there will be a corresponding entry in the pg_attrdef catalog that actually defines the expression. (Check attgenerated to determine whether this is a default or a generation expression.)

attidentity: Option<PgAttributeAttidentity>

char If a zero byte (‘’), then not an identity column. Otherwise, a = generated always, d = generated by default.

attgenerated: Option<PgAttributeAttgenerated>

char If a zero byte (‘’), then not a generated column. Otherwise, s = stored. (Other values might be added in the future.)

attisdropped: bool

bool This column has been dropped and is no longer valid. A dropped column is still physically present in the table, but is ignored by the parser and so cannot be accessed via SQL.

attislocal: bool

bool This column is defined locally in the relation. Note that a column can be locally defined and inherited simultaneously.

attinhcount: u16

int2 The number of direct ancestors this column has. A column with a nonzero number of ancestors cannot be dropped nor renamed.

attcollation: Option<SmolStr>

oid (references pg_collation.oid) The defined collation of the column, or zero if the column is not of a collatable data type

attstattarget: Option<u16>

int2 attstattarget controls the level of detail of statistics accumulated for this column by ANALYZE. A zero value indicates that no statistics should be collected. A null value says to use the system default statistics target. The exact meaning of positive values is data type-dependent. For scalar data types, attstattarget is both the target number of “most common values” to collect, and the target number of histogram bins to create.

attacl: Option<Vec<AclItem<TableColumnAclPrivilege>>>

aclitem[] Column-level access privileges, if any have been granted specifically on this column

attoptions: Option<Vec<SmolStr>>

text[] Attribute-level options, as “keyword=value” strings

attfdwoptions: Option<Vec<SmolStr>>

text[] Attribute-level foreign data wrapper options, as “keyword=value” strings

description: Option<SmolStr>

text The comment from pg_description

seclabel: Option<SmolStr>

text The seclabel from pg_seclabel

seclabel_provider: Option<SmolStr>

text The provider from pg_seclabel

initprivs: Option<Vec<AclItem<TableColumnAclPrivilege>>>

aclitem[] The initial access privileges from pg_init_privs.

initprivs_type: Option<PgAttributeInitprivsType>

char A code defining the type of initial privilege of this object from pg_init_privs. ‘i’ if set by initdb, ‘e’ if set by CREATE EXTENSION.

Trait Implementations

impl Clone for PgAttribute

fn clone(&self) -> PgAttribute

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PgAttribute

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PgAttribute

fn deserialize<__D>( __deserializer: __D, ) -> Result<PgAttribute, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PgAttribute

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for PgAttribute

impl StructuralPartialEq for PgAttribute