Supported Spark Expressions¶
The following Spark expressions are currently available. Any known compatibility issues are noted in the following tables.
Literal Values¶
Expression |
Notes |
|---|---|
Literal values of supported data types |
Unary Arithmetic¶
Expression |
Notes |
|---|---|
UnaryMinus ( |
Binary Arithmetic¶
Expression |
Notes |
|---|---|
Add ( |
|
Subtract ( |
|
Multiply ( |
|
Divide ( |
|
IntegralDivide ( |
|
Remainder ( |
Conditional Expressions¶
Expression |
Notes |
|---|---|
CaseWhen |
|
If |
Comparison¶
Expression |
Notes |
|---|---|
EqualTo ( |
|
EqualNullSafe ( |
|
GreaterThan ( |
|
GreaterThanOrEqual ( |
|
LessThan ( |
|
LessThanOrEqual ( |
|
IsNull ( |
|
IsNotNull ( |
|
In ( |
String Functions¶
Expression |
Notes |
|---|---|
Ascii |
|
BitLength |
|
Chr |
|
ConcatWs |
|
Contains |
|
EndsWith |
|
InitCap |
|
Instr |
|
Length |
|
Like |
|
Lower |
|
OctetLength |
|
Repeat |
Negative argument for number of times to repeat causes exception |
Replace |
|
Reverse |
|
StartsWith |
|
StringRPad |
|
StringSpace |
|
StringTrim |
|
StringTrimBoth |
|
StringTrimLeft |
|
StringTrimRight |
|
Substring |
|
Translate |
|
Upper |
Date/Time Functions¶
Expression |
Notes |
|---|---|
DatePart |
Only |
Extract |
Only |
Hour |
|
Minute |
|
Second |
|
TruncDate |
|
TruncTimestamp |
|
Year |
Math Expressions¶
Expression |
Notes |
|---|---|
Abs |
|
Acos |
|
Asin |
|
Atan |
|
Atan2 |
|
Ceil |
|
Cos |
|
Exp |
|
Floor |
|
IsNaN |
|
Log |
|
Log2 |
|
Log10 |
|
Pow |
|
Round |
|
Signum |
|
Sin |
|
Sqrt |
|
Tan |
Hashing Functions¶
Expression |
Notes |
|---|---|
Md5 |
|
Hash |
|
Sha2 |
|
XxHash64 |
Boolean Expressions¶
Expression |
Notes |
|---|---|
And |
|
Or |
|
Not |
Bitwise Expressions¶
Expression |
Notes |
|---|---|
ShiftLeft ( |
|
ShiftRight ( |
|
BitAnd ( |
|
BitOr ( |
|
BitXor ( |
|
BitwiseNot ( |
|
BoolAnd ( |
|
BoolOr ( |
Aggregate Expressions¶
Expression |
Notes |
|---|---|
Avg |
|
BitAndAgg |
|
BitOrAgg |
|
BitXorAgg |
|
Corr |
|
Count |
|
CovPopulation |
|
CovSample |
|
First |
|
Last |
|
Max |
|
Min |
|
StddevPop |
|
StddevSamp |
|
Sum |
|
VariancePop |
|
VarianceSamp |
Arrays¶
Expression |
Notes |
|---|---|
ArrayAppend |
Experimental |
ArrayCompact |
Experimental |
ArrayContains |
Experimental |
ArrayDistinct |
Experimental: behaves differently than spark. Datafusion first sorts then removes duplicates while spark preserves the original order. |
ArrayExcept |
Experimental |
ArrayInsert |
Experimental |
ArrayIntersect |
Experimental |
ArrayJoin |
Experimental |
ArrayMax |
Experimental |
ArrayRemove |
|
ArrayRepeat |
Experimental |
ArraysOverlap |
Experimental |
ArrayUnion |
Experimental: behaves differently than spark. Datafusion sorts the input arrays before performing the union, while spark preserves the order of the first array and appends unique elements from the second. |
ElementAt |
Arrays only |
GetArrayItem |
Structs¶
Expression |
Notes |
|---|---|
CreateNamedStruct |
|
GetStructField |
|
StructsToJson |
Other¶
Expression |
Notes |
|---|---|
Cast |
See compatibility guide for list of supported cast expressions and known issues |
BloomFilterMightContain |
|
ScalarSubquery |
|
Coalesce |
|
NormalizeNaNAndZero |
|
ToPrettyString |