Cql::BaseColumn
< Reference
< Object
A column in a table This class represents a column in a table It provides methods for setting the column type, default value, and constraints It also provides methods for building expressions
Example Creating a new column
(name : Symbol, type : T.class, as_name : String | Nil = nil, null : Bool = false, default : DB::Any = nil, unique : Bool = false, size : Int32 | Nil = nil, index : Index | Nil = nil)
Create a new column instance
@param : name (Symbol) - The name of the column
@param : type (Any) - The data type of the column
@param : as_name (String, nil) - An optional alias for the column
@param : null (Bool) - Whether the column allows null values (default: false)
@param : default (DB::Any) - The default value for the column (default: nil)
@param : unique (Bool) - Whether the column should have a unique constraint (default: false)
@param : size (Int32, nil) - The size of the column (default: nil)
@param : index (Index, nil) - The index for the column (default: nil)
@return : Nil
@raise : Cql::Error if the column type is not valid
Example
Expressions for this column
@return [Expression::ColumnBuilder] the column expression builder
Example
(value)
Validate the value
@param value [DB::Any] The value to validate
Example