Type Alias ColumnarDynBuffer 

pub type ColumnarDynBuffer = ColumnarBuffer<BoxColumnBuffer>;

Columnar buffer with dynamic column types decided at runtime.

Go to buffer implementation for this crate if fetching data. If you have no reason to use something else use this.

Aliased Type

pub struct ColumnarDynBuffer { /* private fields */ }

Implementations

impl ColumnarDynBuffer

pub fn from_descs( capacity: usize, descs: impl IntoIterator<Item = BufferDesc>, ) -> Self

Allocates a ColumnarDynBuffer fitting the buffer descriptions.

pub fn try_from_descs( capacity: usize, descs: impl IntoIterator<Item = BufferDesc>, ) -> Result<Self, Error>

Allocates a ColumnarDynBuffer fitting the buffer descriptions. If not enough memory is available to allocate the buffers this function fails with Error::TooLargeColumnBufferSize. This function is slower than Self::from_descs which would just panic if not enough memory is available for allocation.

pub fn from_descs_and_indices( max_rows: usize, description: impl Iterator<Item = (u16, BufferDesc)>, ) -> Self

Allows you to pass the buffer descriptions together with a one based column index referring the column, the buffer is supposed to bind to. This allows you also to ignore columns in a result set, by not binding them at all. There is no restriction on the order of column indices passed, but the function will panic, if the indices are not unique.