Struct ColumnInfo 

pub struct ColumnInfo {

    pub name: String,
    pub oracle_type: OracleType,
    pub data_size: u32,
    pub buffer_size: u32,
    pub precision: i16,
    pub scale: i16,
    pub nullable: bool,
    pub csfrm: u8,
    pub type_schema: Option<String>,
    pub type_name: Option<String>,
    pub domain_schema: Option<String>,
    pub domain_name: Option<String>,
    pub is_json: bool,
    pub is_oson: bool,
    pub vector_dimensions: Option<u32>,
    pub vector_format: Option<u8>,
    pub element_type: Option<OracleType>,
}

Metadata for a column in a result set

Fields

name: String

Column name

oracle_type: OracleType

Oracle data type

data_size: u32

Data type size

buffer_size: u32

Buffer size for fetching

precision: i16

Precision (for NUMBER)

scale: i16

Scale (for NUMBER)

nullable: bool

Whether NULL values are allowed

csfrm: u8

Character set form

type_schema: Option<String>

Schema name (for object types)

type_name: Option<String>

Type name (for object types)

domain_schema: Option<String>

Domain schema (23ai+)

domain_name: Option<String>

Domain name (23ai+)

is_json: bool

Is JSON column

is_oson: bool

Is OSON format

vector_dimensions: Option<u32>

Vector dimensions (23ai+)

vector_format: Option<u8>

Vector format (23ai+)

element_type: Option<OracleType>

Element type for collections (VARRAY, Nested Table)

Implementations

impl ColumnInfo

pub fn new(name: impl Into<String>, oracle_type: OracleType) -> Self

Create a new column with minimal info

pub fn is_lob(&self) -> bool

Check if this column is a LOB type (CLOB, BLOB, BFILE, JSON, or VECTOR)

pub fn requires_no_prefetch(&self) -> bool

Check if this column requires no prefetch (LOB types)

Trait Implementations

impl Clone for ColumnInfo

fn clone(&self) -> ColumnInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnInfo

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

Formats the value using the given formatter.