GNNTable.update_column_dtype()

Updates the data type of existing column in the GNN table. The column must already exist in the table. If it does not, it must be added first with the add_column method.

Parameters

Name	Type	Description	Optional
col_name	str	The name of the column to update.	No
dtype	ColumnDType	The new data type to assign to the column can be ColumnDType('text'), ColumnDType('integer'), ColumnDType('float'), ColumnDType('category'), ColumnDType('multi_categorical'), ColumnDType('embedding') or ColumnDType('datetime'). Detailed descriptions of each type can be found in Column DTypes.	No

Example

from relationalai_gnns import GNNTable, CandidateKey
from relationalai_gnns import ColumnDType

table_with_ckey = GNNTable(
    connector=connector,
    name="TableWithCKey",
    source="DATABASE.SCHEMA.TABLE_WITH_CKEY",
    type="node",
    candidate_keys=[CandidateKey(column_name="Id")]
)

table_with_ckey.update_column_dtype(col_name="some_float_column_name",
                                    dtype=ColumnDType('float'))