class CQL::DSL::Col(T)

• CQL::DSL::Col(T)
• Reference
• Object

Overview

A model column in the typed query DSL (where { age >= 18 }).

Comparisons only accept values of the column's own type T; anything else is a compile-time error that names both types. Nullable columns are typed by their non-nil type, and == nil / != nil mean IS NULL / IS NOT NULL.

Direct Known Subclasses

• CQL::DSL::JsonCol
• CQL::DSL::TextCol

Defined in:

active_record/dsl/column.cr

Constructors

• .new(expression : Expression::BaseColumn)

Instance Method Summary

• #!=(other : Col(T)) : Expression::ConditionBuilder
• #!=(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #!=(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #!=(other : Nil) : Expression::ConditionBuilder
• #!=(value : T) : Expression::ConditionBuilder
• #!=(other : U) : NoReturn forall U
• #<(other : Col(T)) : Expression::ConditionBuilder
• #<(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #<(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #<(value : T) : Expression::ConditionBuilder
• #<(other : U) : NoReturn forall U
• #<=(other : Col(T)) : Expression::ConditionBuilder
• #<=(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #<=(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #<=(value : T) : Expression::ConditionBuilder
• #<=(other : U) : NoReturn forall U
• #==(other : Col(T)) : Expression::ConditionBuilder
• #==(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #==(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #==(other : Nil) : Expression::ConditionBuilder
• #==(value : T) : Expression::ConditionBuilder
• #==(other : U) : NoReturn forall U
• #>(other : Col(T)) : Expression::ConditionBuilder
• #>(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #>(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #>(value : T) : Expression::ConditionBuilder
• #>(other : U) : NoReturn forall U
• #>=(other : Col(T)) : Expression::ConditionBuilder
• #>=(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #>=(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #>=(value : T) : Expression::ConditionBuilder
• #>=(other : U) : NoReturn forall U
• #between(min : T, max : T) : Expression::ConditionBuilder
• #eq(other : Col(T)) : Expression::ConditionBuilder
• #eq(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #eq(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #eq(value : T) : Expression::ConditionBuilder
• #eq(other : U) : NoReturn forall U
• #expression : Expression::BaseColumn
• #gt(other : Col(T)) : Expression::ConditionBuilder
• #gt(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #gt(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #gt(value : T) : Expression::ConditionBuilder
• #gt(other : U) : NoReturn forall U
• #gte(other : Col(T)) : Expression::ConditionBuilder
• #gte(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #gte(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #gte(value : T) : Expression::ConditionBuilder
• #gte(other : U) : NoReturn forall U
• #in(values : Array(Int)) : Expression::ConditionBuilder

  Integer literals against a numeric column of another width (id.in([1, 2]) on Int64).

• #in(values : Array(T)) : Expression::ConditionBuilder
• #lt(other : Col(T)) : Expression::ConditionBuilder
• #lt(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #lt(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #lt(value : T) : Expression::ConditionBuilder
• #lt(other : U) : NoReturn forall U
• #lte(other : Col(T)) : Expression::ConditionBuilder
• #lte(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #lte(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #lte(value : T) : Expression::ConditionBuilder
• #lte(other : U) : NoReturn forall U
• #neq(other : Col(T)) : Expression::ConditionBuilder
• #neq(value : Int) : Expression::ConditionBuilder

  An integer literal against a numeric column of another width (id == 7 on an Int64 column).

• #neq(value : Float) : Expression::ConditionBuilder

  A float literal against a floating point column.

• #neq(value : T) : Expression::ConditionBuilder
• #neq(other : U) : NoReturn forall U
• #not_in(values : Array(Int)) : Expression::ConditionBuilder
• #not_in(values : Array(T)) : Expression::ConditionBuilder
• #not_null : Expression::ConditionBuilder
• #null : Expression::ConditionBuilder

Constructor Detail

Instance Method Detail