Class

org.apache.spark.sql

TypedColumn

Related Doc: package sql

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class TypedColumn[-T, U] extends Column

A Column where an Encoder has been given for the expected input and return type. To create a TypedColumn, use the as function on a Column.

T

The input type expected for this expression. Can be Any if the expression is type checked by the analyzer instead of the compiler (i.e. expr("sum(...)")).

U

The output type of this column.

Source
Column.scala
Since

1.6.0

Linear Supertypes
Column, Logging, AnyRef, Any
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Inherited
  1. TypedColumn
  2. Column
  3. Logging
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new TypedColumn(expr: Expression, encoder: ExpressionEncoder[U])

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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. def %(other: Any): Column

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    Modulo (a.k.a.

    Modulo (a.k.a. remainder) expression.

    Definition Classes
    Column
    Since

    1.3.0

  4. def &&(other: Any): Column

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    Boolean AND.

    Boolean AND.

    // Scala: The following selects people that are in school and employed at the same time.
    people.select( people("inSchool") && people("isEmployed") )
    
    // Java:
    people.select( people("inSchool").and(people("isEmployed")) );
    Definition Classes
    Column
    Since

    1.3.0

  5. def *(other: Any): Column

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    Multiplication of this expression and another expression.

    Multiplication of this expression and another expression.

    // Scala: The following multiplies a person's height by their weight.
    people.select( people("height") * people("weight") )
    
    // Java:
    people.select( people("height").multiply(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  6. def +(other: Any): Column

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    Sum of this expression and another expression.

    Sum of this expression and another expression.

    // Scala: The following selects the sum of a person's height and weight.
    people.select( people("height") + people("weight") )
    
    // Java:
    people.select( people("height").plus(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  7. def -(other: Any): Column

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    Subtraction.

    Subtraction. Subtract the other expression from this expression.

    // Scala: The following selects the difference between people's height and their weight.
    people.select( people("height") - people("weight") )
    
    // Java:
    people.select( people("height").minus(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  8. def /(other: Any): Column

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    Division this expression by another expression.

    Division this expression by another expression.

    // Scala: The following divides a person's height by their weight.
    people.select( people("height") / people("weight") )
    
    // Java:
    people.select( people("height").divide(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  9. def <(other: Any): Column

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    Less than.

    Less than.

    // Scala: The following selects people younger than 21.
    people.select( people("age") < 21 )
    
    // Java:
    people.select( people("age").lt(21) );
    Definition Classes
    Column
    Since

    1.3.0

  10. def <=(other: Any): Column

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    Less than or equal to.

    Less than or equal to.

    // Scala: The following selects people age 21 or younger than 21.
    people.select( people("age") <= 21 )
    
    // Java:
    people.select( people("age").leq(21) );
    Definition Classes
    Column
    Since

    1.3.0

  11. def <=>(other: Any): Column

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    Equality test that is safe for null values.

    Equality test that is safe for null values.

    Definition Classes
    Column
    Since

    1.3.0

  12. def =!=(other: Any): Column

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    Inequality test.

    Inequality test.

    // Scala:
    df.select( df("colA") =!= df("colB") )
    df.select( !(df("colA") === df("colB")) )
    
    // Java:
    import static org.apache.spark.sql.functions.*;
    df.filter( col("colA").notEqual(col("colB")) );
    Definition Classes
    Column
    Since

    2.0.0

  13. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  14. def ===(other: Any): Column

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    Equality test.

    Equality test.

    // Scala:
    df.filter( df("colA") === df("colB") )
    
    // Java
    import static org.apache.spark.sql.functions.*;
    df.filter( col("colA").equalTo(col("colB")) );
    Definition Classes
    Column
    Since

    1.3.0

  15. def >(other: Any): Column

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    Greater than.

    Greater than.

    // Scala: The following selects people older than 21.
    people.select( people("age") > 21 )
    
    // Java:
    import static org.apache.spark.sql.functions.*;
    people.select( people("age").gt(21) );
    Definition Classes
    Column
    Since

    1.3.0

  16. def >=(other: Any): Column

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    Greater than or equal to an expression.

    Greater than or equal to an expression.

    // Scala: The following selects people age 21 or older than 21.
    people.select( people("age") >= 21 )
    
    // Java:
    people.select( people("age").geq(21) )
    Definition Classes
    Column
    Since

    1.3.0

  17. def alias(alias: String): Column

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    Gives the column an alias.

    Gives the column an alias. Same as as.

    // Renames colA to colB in select output.
    df.select($"colA".alias("colB"))
    Definition Classes
    Column
    Since

    1.4.0

  18. def and(other: Column): Column

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    Boolean AND.

    Boolean AND.

    // Scala: The following selects people that are in school and employed at the same time.
    people.select( people("inSchool") && people("isEmployed") )
    
    // Java:
    people.select( people("inSchool").and(people("isEmployed")) );
    Definition Classes
    Column
    Since

    1.3.0

  19. def apply(extraction: Any): Column

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    Extracts a value or values from a complex type.

    Extracts a value or values from a complex type. The following types of extraction are supported:

    • Given an Array, an integer ordinal can be used to retrieve a single value.
    • Given a Map, a key of the correct type can be used to retrieve an individual value.
    • Given a Struct, a string fieldName can be used to extract that field.
    • Given an Array of Structs, a string fieldName can be used to extract filed of every struct in that array, and return an Array of fields
    Definition Classes
    Column
    Since

    1.4.0

  20. def as(alias: String, metadata: Metadata): Column

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    Gives the column an alias with metadata.

    Gives the column an alias with metadata.

    val metadata: Metadata = ...
    df.select($"colA".as("colB", metadata))
    Definition Classes
    Column
    Since

    1.3.0

  21. def as(alias: Symbol): Column

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    Gives the column an alias.

    Gives the column an alias.

    // Renames colA to colB in select output.
    df.select($"colA".as('colB))

    If the current column has metadata associated with it, this metadata will be propagated to the new column. If this not desired, use as with explicitly empty metadata.

    Definition Classes
    Column
    Since

    1.3.0

  22. def as(aliases: Array[String]): Column

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    Assigns the given aliases to the results of a table generating function.

    Assigns the given aliases to the results of a table generating function.

    // Renames colA to colB in select output.
    df.select(explode($"myMap").as("key" :: "value" :: Nil))
    Definition Classes
    Column
    Since

    1.4.0

  23. def as(aliases: Seq[String]): Column

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    (Scala-specific) Assigns the given aliases to the results of a table generating function.

    (Scala-specific) Assigns the given aliases to the results of a table generating function.

    // Renames colA to colB in select output.
    df.select(explode($"myMap").as("key" :: "value" :: Nil))
    Definition Classes
    Column
    Since

    1.4.0

  24. def as(alias: String): Column

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    Gives the column an alias.

    Gives the column an alias.

    // Renames colA to colB in select output.
    df.select($"colA".as("colB"))

    If the current column has metadata associated with it, this metadata will be propagated to the new column. If this not desired, use as with explicitly empty metadata.

    Definition Classes
    Column
    Since

    1.3.0

  25. def as[U](implicit arg0: Encoder[U]): TypedColumn[Any, U]

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    Provides a type hint about the expected return value of this column.

    Provides a type hint about the expected return value of this column. This information can be used by operations such as select on a Dataset to automatically convert the results into the correct JVM types.

    Definition Classes
    Column
    Since

    1.6.0

  26. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  27. def asc: Column

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    Returns an ordering used in sorting.

    Returns an ordering used in sorting.

    // Scala: sort a DataFrame by age column in ascending order.
    df.sort(df("age").asc)
    
    // Java
    df.sort(df.col("age").asc());
    Definition Classes
    Column
    Since

    1.3.0

  28. def between(lowerBound: Any, upperBound: Any): Column

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    True if the current column is between the lower bound and upper bound, inclusive.

    True if the current column is between the lower bound and upper bound, inclusive.

    Definition Classes
    Column
    Since

    1.4.0

  29. def bitwiseAND(other: Any): Column

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    Compute bitwise AND of this expression with another expression.

    Compute bitwise AND of this expression with another expression.

    df.select($"colA".bitwiseAND($"colB"))
    Definition Classes
    Column
    Since

    1.4.0

  30. def bitwiseOR(other: Any): Column

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    Compute bitwise OR of this expression with another expression.

    Compute bitwise OR of this expression with another expression.

    df.select($"colA".bitwiseOR($"colB"))
    Definition Classes
    Column
    Since

    1.4.0

  31. def bitwiseXOR(other: Any): Column

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    Compute bitwise XOR of this expression with another expression.

    Compute bitwise XOR of this expression with another expression.

    df.select($"colA".bitwiseXOR($"colB"))
    Definition Classes
    Column
    Since

    1.4.0

  32. def cast(to: String): Column

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    Casts the column to a different data type, using the canonical string representation of the type.

    Casts the column to a different data type, using the canonical string representation of the type. The supported types are: string, boolean, byte, short, int, long, float, double, decimal, date, timestamp.

    // Casts colA to integer.
    df.select(df("colA").cast("int"))
    Definition Classes
    Column
    Since

    1.3.0

  33. def cast(to: DataType): Column

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    Casts the column to a different data type.

    Casts the column to a different data type.

    // Casts colA to IntegerType.
    import org.apache.spark.sql.types.IntegerType
    df.select(df("colA").cast(IntegerType))
    
    // equivalent to
    df.select(df("colA").cast("int"))
    Definition Classes
    Column
    Since

    1.3.0

  34. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  35. def contains(other: Any): Column

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    Contains the other element.

    Contains the other element.

    Definition Classes
    Column
    Since

    1.3.0

  36. def desc: Column

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    Returns an ordering used in sorting.

    Returns an ordering used in sorting.

    // Scala: sort a DataFrame by age column in descending order.
    df.sort(df("age").desc)
    
    // Java
    df.sort(df.col("age").desc());
    Definition Classes
    Column
    Since

    1.3.0

  37. def divide(other: Any): Column

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    Division this expression by another expression.

    Division this expression by another expression.

    // Scala: The following divides a person's height by their weight.
    people.select( people("height") / people("weight") )
    
    // Java:
    people.select( people("height").divide(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  38. def endsWith(literal: String): Column

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    String ends with another string literal.

    String ends with another string literal.

    Definition Classes
    Column
    Since

    1.3.0

  39. def endsWith(other: Column): Column

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    String ends with.

    String ends with.

    Definition Classes
    Column
    Since

    1.3.0

  40. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  41. def eqNullSafe(other: Any): Column

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    Equality test that is safe for null values.

    Equality test that is safe for null values.

    Definition Classes
    Column
    Since

    1.3.0

  42. def equalTo(other: Any): Column

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    Equality test.

    Equality test.

    // Scala:
    df.filter( df("colA") === df("colB") )
    
    // Java
    import static org.apache.spark.sql.functions.*;
    df.filter( col("colA").equalTo(col("colB")) );
    Definition Classes
    Column
    Since

    1.3.0

  43. def equals(that: Any): Boolean

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    Definition Classes
    Column → AnyRef → Any
  44. def explain(extended: Boolean): Unit

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    Prints the expression to the console for debugging purpose.

    Prints the expression to the console for debugging purpose.

    Definition Classes
    Column
    Since

    1.3.0

  45. val expr: Expression

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    Attributes
    protected[org.apache.spark.sql]
    Definition Classes
    Column
  46. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  47. def geq(other: Any): Column

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    Greater than or equal to an expression.

    Greater than or equal to an expression.

    // Scala: The following selects people age 21 or older than 21.
    people.select( people("age") >= 21 )
    
    // Java:
    people.select( people("age").geq(21) )
    Definition Classes
    Column
    Since

    1.3.0

  48. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any
  49. def getField(fieldName: String): Column

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    An expression that gets a field by name in a StructType.

    An expression that gets a field by name in a StructType.

    Definition Classes
    Column
    Since

    1.3.0

  50. def getItem(key: Any): Column

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    An expression that gets an item at position ordinal out of an array, or gets a value by key key in a MapType.

    An expression that gets an item at position ordinal out of an array, or gets a value by key key in a MapType.

    Definition Classes
    Column
    Since

    1.3.0

  51. def gt(other: Any): Column

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    Greater than.

    Greater than.

    // Scala: The following selects people older than 21.
    people.select( people("age") > lit(21) )
    
    // Java:
    import static org.apache.spark.sql.functions.*;
    people.select( people("age").gt(21) );
    Definition Classes
    Column
    Since

    1.3.0

  52. def hashCode(): Int

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    Definition Classes
    Column → AnyRef → Any
  53. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  54. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  55. def isNaN: Column

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    True if the current expression is NaN.

    True if the current expression is NaN.

    Definition Classes
    Column
    Since

    1.5.0

  56. def isNotNull: Column

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    True if the current expression is NOT null.

    True if the current expression is NOT null.

    Definition Classes
    Column
    Since

    1.3.0

  57. def isNull: Column

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    True if the current expression is null.

    True if the current expression is null.

    Definition Classes
    Column
    Since

    1.3.0

  58. def isTraceEnabled(): Boolean

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    Attributes
    protected
    Definition Classes
    Logging
  59. def isin(list: Any*): Column

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    A boolean expression that is evaluated to true if the value of this expression is contained by the evaluated values of the arguments.

    A boolean expression that is evaluated to true if the value of this expression is contained by the evaluated values of the arguments.

    Definition Classes
    Column
    Annotations
    @varargs()
    Since

    1.5.0

  60. def leq(other: Any): Column

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    Less than or equal to.

    Less than or equal to.

    // Scala: The following selects people age 21 or younger than 21.
    people.select( people("age") <= 21 )
    
    // Java:
    people.select( people("age").leq(21) );
    Definition Classes
    Column
    Since

    1.3.0

  61. def like(literal: String): Column

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    SQL like expression.

    SQL like expression.

    Definition Classes
    Column
    Since

    1.3.0

  62. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging
  63. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  64. def logDebug(msg: ⇒ String): Unit

    Permalink
    Attributes
    protected
    Definition Classes
    Logging
  65. def logError(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  66. def logError(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  67. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  68. def logInfo(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  69. def logName: String

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    Attributes
    protected
    Definition Classes
    Logging
  70. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  71. def logTrace(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  72. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

    Permalink
    Attributes
    protected
    Definition Classes
    Logging
  73. def logWarning(msg: ⇒ String): Unit

    Permalink
    Attributes
    protected
    Definition Classes
    Logging
  74. def lt(other: Any): Column

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    Less than.

    Less than.

    // Scala: The following selects people younger than 21.
    people.select( people("age") < 21 )
    
    // Java:
    people.select( people("age").lt(21) );
    Definition Classes
    Column
    Since

    1.3.0

  75. def minus(other: Any): Column

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    Subtraction.

    Subtraction. Subtract the other expression from this expression.

    // Scala: The following selects the difference between people's height and their weight.
    people.select( people("height") - people("weight") )
    
    // Java:
    people.select( people("height").minus(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  76. def mod(other: Any): Column

    Permalink

    Modulo (a.k.a.

    Modulo (a.k.a. remainder) expression.

    Definition Classes
    Column
    Since

    1.3.0

  77. def multiply(other: Any): Column

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    Multiplication of this expression and another expression.

    Multiplication of this expression and another expression.

    // Scala: The following multiplies a person's height by their weight.
    people.select( people("height") * people("weight") )
    
    // Java:
    people.select( people("height").multiply(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  78. def name(alias: String): TypedColumn[T, U]

    Permalink

    Gives the TypedColumn a name (alias).

    Gives the TypedColumn a name (alias). If the current TypedColumn has metadata associated with it, this metadata will be propagated to the new column.

    Definition Classes
    TypedColumnColumn
    Since

    2.0.0

  79. final def ne(arg0: AnyRef): Boolean

    Permalink
    Definition Classes
    AnyRef
  80. def notEqual(other: Any): Column

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    Inequality test.

    Inequality test.

    // Scala:
    df.select( df("colA") !== df("colB") )
    df.select( !(df("colA") === df("colB")) )
    
    // Java:
    import static org.apache.spark.sql.functions.*;
    df.filter( col("colA").notEqual(col("colB")) );
    Definition Classes
    Column
    Since

    1.3.0

  81. final def notify(): Unit

    Permalink
    Definition Classes
    AnyRef
  82. final def notifyAll(): Unit

    Permalink
    Definition Classes
    AnyRef
  83. def or(other: Column): Column

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    Boolean OR.

    Boolean OR.

    // Scala: The following selects people that are in school or employed.
    people.filter( people("inSchool") || people("isEmployed") )
    
    // Java:
    people.filter( people("inSchool").or(people("isEmployed")) );
    Definition Classes
    Column
    Since

    1.3.0

  84. def otherwise(value: Any): Column

    Permalink

    Evaluates a list of conditions and returns one of multiple possible result expressions.

    Evaluates a list of conditions and returns one of multiple possible result expressions. If otherwise is not defined at the end, null is returned for unmatched conditions.

    // Example: encoding gender string column into integer.
    
    // Scala:
    people.select(when(people("gender") === "male", 0)
      .when(people("gender") === "female", 1)
      .otherwise(2))
    
    // Java:
    people.select(when(col("gender").equalTo("male"), 0)
      .when(col("gender").equalTo("female"), 1)
      .otherwise(2))
    Definition Classes
    Column
    Since

    1.4.0

  85. def over(): Column

    Permalink

    Define a empty analytic clause.

    Define a empty analytic clause. In this case the analytic function is applied and presented for all rows in the result set.

    df.select(
      sum("price").over(),
      avg("price").over()
    )
    Definition Classes
    Column
    Since

    2.0.0

  86. def over(window: WindowSpec): Column

    Permalink

    Define a windowing column.

    Define a windowing column.

    val w = Window.partitionBy("name").orderBy("id")
    df.select(
      sum("price").over(w.rangeBetween(Long.MinValue, 2)),
      avg("price").over(w.rowsBetween(0, 4))
    )
    Definition Classes
    Column
    Since

    1.4.0

  87. def plus(other: Any): Column

    Permalink

    Sum of this expression and another expression.

    Sum of this expression and another expression.

    // Scala: The following selects the sum of a person's height and weight.
    people.select( people("height") + people("weight") )
    
    // Java:
    people.select( people("height").plus(people("weight")) );
    Definition Classes
    Column
    Since

    1.3.0

  88. def rlike(literal: String): Column

    Permalink

    SQL RLIKE expression (LIKE with Regex).

    SQL RLIKE expression (LIKE with Regex).

    Definition Classes
    Column
    Since

    1.3.0

  89. def startsWith(literal: String): Column

    Permalink

    String starts with another string literal.

    String starts with another string literal.

    Definition Classes
    Column
    Since

    1.3.0

  90. def startsWith(other: Column): Column

    Permalink

    String starts with.

    String starts with.

    Definition Classes
    Column
    Since

    1.3.0

  91. def substr(startPos: Int, len: Int): Column

    Permalink

    An expression that returns a substring.

    An expression that returns a substring.

    startPos

    starting position.

    len

    length of the substring.

    Definition Classes
    Column
    Since

    1.3.0

  92. def substr(startPos: Column, len: Column): Column

    Permalink

    An expression that returns a substring.

    An expression that returns a substring.

    startPos

    expression for the starting position.

    len

    expression for the length of the substring.

    Definition Classes
    Column
    Since

    1.3.0

  93. final def synchronized[T0](arg0: ⇒ T0): T0

    Permalink
    Definition Classes
    AnyRef
  94. def toString(): String

    Permalink
    Definition Classes
    Column → AnyRef → Any
  95. def unary_!: Column

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    Inversion of boolean expression, i.e.

    Inversion of boolean expression, i.e. NOT.

    // Scala: select rows that are not active (isActive === false)
    df.filter( !df("isActive") )
    
    // Java:
    import static org.apache.spark.sql.functions.*;
    df.filter( not(df.col("isActive")) );
    Definition Classes
    Column
    Since

    1.3.0

  96. def unary_-: Column

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    Unary minus, i.e.

    Unary minus, i.e. negate the expression.

    // Scala: select the amount column and negates all values.
    df.select( -df("amount") )
    
    // Java:
    import static org.apache.spark.sql.functions.*;
    df.select( negate(col("amount") );
    Definition Classes
    Column
    Since

    1.3.0

  97. final def wait(): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  98. final def wait(arg0: Long, arg1: Int): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  99. final def wait(arg0: Long): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  100. def when(condition: Column, value: Any): Column

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    Evaluates a list of conditions and returns one of multiple possible result expressions.

    Evaluates a list of conditions and returns one of multiple possible result expressions. If otherwise is not defined at the end, null is returned for unmatched conditions.

    // Example: encoding gender string column into integer.
    
    // Scala:
    people.select(when(people("gender") === "male", 0)
      .when(people("gender") === "female", 1)
      .otherwise(2))
    
    // Java:
    people.select(when(col("gender").equalTo("male"), 0)
      .when(col("gender").equalTo("female"), 1)
      .otherwise(2))
    Definition Classes
    Column
    Since

    1.4.0

  101. def ||(other: Any): Column

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    Boolean OR.

    Boolean OR.

    // Scala: The following selects people that are in school or employed.
    people.filter( people("inSchool") || people("isEmployed") )
    
    // Java:
    people.filter( people("inSchool").or(people("isEmployed")) );
    Definition Classes
    Column
    Since

    1.3.0

Deprecated Value Members

  1. def !==(other: Any): Column

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    Inequality test.

    Inequality test.

    // Scala:
    df.select( df("colA") !== df("colB") )
    df.select( !(df("colA") === df("colB")) )
    
    // Java:
    import static org.apache.spark.sql.functions.*;
    df.filter( col("colA").notEqual(col("colB")) );
    Definition Classes
    Column
    Annotations
    @deprecated
    Deprecated

    (Since version 2.0.0) !== does not have the same precedence as ===, use =!= instead

    Since

    1.3.0

Inherited from Column

Inherited from Logging

Inherited from AnyRef

Inherited from Any

DataFrame functions

Expression operators

Java-specific expression operators

Support functions for DataFrames