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new c577ae7202a7 [SPARK-51423][SQL] Add the current_time() function for
TIME datatype
c577ae7202a7 is described below
commit c577ae7202a778a23601925b4d803d3389f0c0dd
Author: Sakthi <sak...@apache.org>
AuthorDate: Fri Apr 11 11:12:00 2025 +0200
[SPARK-51423][SQL] Add the current_time() function for TIME datatype
### What changes were proposed in this pull request?
This PR adds support for a new function current_time() which returns the
current time at the start of query evaluation.
```bash
# happy cases
scala> spark.sql("SELECT current_time(0);").show()
+---------------+
|current_time(0)|
+---------------+
| 17:11:26|
+---------------+
scala> spark.sql("SELECT current_time(3);").show()
+---------------+
|current_time(3)|
+---------------+
| 17:11:50.225|
+---------------+
scala> spark.sql("SELECT current_time(6);").show()
+---------------+
|current_time(6)|
+---------------+
|17:12:00.734735|
+---------------+
# No braces and Empty braces
scala> spark.sql("SELECT current_time;").show()
+---------------+
|current_time(6)|
+---------------+
|17:12:23.132088|
+---------------+
scala> spark.sql("SELECT current_time();").show()
+---------------+
|current_time(6)|
+---------------+
|17:12:26.718602|
+---------------+
# foldability
## Nested Arithmetic
scala> spark.sql("SELECT current_time((4 - 2) * (1 + 1));").show()
+---------------------------------+
|current_time(((4 - 2) * (1 + 1)))|
+---------------------------------+
| 17:13:04.4647|
+---------------------------------+
## Casting String literals
scala> spark.sql("SELECT current_time(CAST(' 0005 ' AS INT));").show()
+---------------------------------+
|current_time(CAST( 0005 AS INT))|
+---------------------------------+
| 17:13:26.28039|
+---------------------------------+
scala> spark.sql("SELECT current_time('5');").show()
+---------------+
|current_time(5)|
+---------------+
| 22:34:07.65007|
+---------------+
## Combine Cast and Arithmetic
scala> spark.sql("SELECT current_time(CAST('4' AS INT) * CAST('1' AS
INT));").show()
+-----------------------------------------------+
|current_time((CAST(4 AS INT) * CAST(1 AS INT)))|
+-----------------------------------------------+
| 17:14:06.7151|
+-----------------------------------------------+
# failure cases
scala> spark.sql("SELECT current_time(-1);").show()
org.apache.spark.sql.catalyst.ExtendedAnalysisException:
[DATATYPE_MISMATCH.VALUE_OUT_OF_RANGE] Cannot resolve "current_time(-1)" due to
data type mismatch: The `precision` must be between [0, 6] (current value =
-1). SQLSTATE: 42K09; line 1 pos 7;
'Project [unresolvedalias(current_time(-1))]
+- OneRowRelation'
scala> spark.sql("SELECT current_time('foo');").show()
org.apache.spark.SparkNumberFormatException: [CAST_INVALID_INPUT] The value
'foo' of the type "STRING" cannot be cast to "INT" because it is malformed.
Correct the value as per the syntax, or change its target type. Use `try_cast`
to tolerate malformed input and return NULL instead. SQLSTATE: 22018
== SQL (line 1, position 8) ==
SELECT current_time('foo');
scala> spark.sql("SELECT current_time(2,2);").show()
org.apache.spark.sql.AnalysisException: [WRONG_NUM_ARGS.WITHOUT_SUGGESTION]
The `current_time` requires [0, 1] parameters but the actual number is 2.
Please, refer to 'https://spark.apache.org/docs/latest/sql-ref-functions.html'
for a fix. SQLSTATE: 42605; line 1 pos 7
# All calls of current_time within the same query should return the same
value.
scala> val df = spark.sql("""
| SELECT
| current_time AS col1,
| current_time() AS col2,
| current_time(0) AS col3,
| current_time(1) AS col4,
| current_time(2) AS col5,
| current_time(3) AS col6,
| current_time(4) AS col7,
| current_time(5) AS col8,
| current_time(6) AS col9,
| current_time AS col10
| """)
val df: org.apache.spark.sql.DataFrame = [col1: time(6), col2: time(6) ...
8 more fields]
scala> df.show()
+---------------+---------------+--------+----------+-----------+-----------+-------------+--------------+---------------+---------------+
| col1| col2| col3| col4| col5|
col6| col7| col8| col9| col10|
+---------------+---------------+--------+----------+-----------+-----------+-------------+--------------+---------------+---------------+
|17:15:47.680648|17:15:47.680648|17:15:47|17:15:47.6|17:15:47.68|17:15:47.68|17:15:47.6806|17:15:47.68064|17:15:47.680648|17:15:47.680648|
+---------------+---------------+--------+----------+-----------+-----------+-------------+--------------+---------------+---------------+
```
### Why are the changes needed?
Adds a built-in current_time([n]) function returning just the time portion
(in a TIME(n) type). This aligns Spark with other SQL systems offering a native
time function, improves convenience for time-only queries, and complements
existing functions like current_date and current_timestamp.
### Does this PR introduce _any_ user-facing change?
Yes, adds a new function. Users can now get the current time using this
function.
### How was this patch tested?
Manual testing as shown above and running UTs added:
```bash
$ build/sbt "test:testOnly *TimeExpressionsSuite.scala"
$ build/sbt "test:testOnly *ComputeCurrentTimeSuite.scala"
$ build/sbt "test:testOnly *ResolveInlineTablesSuite.scala
$ build/sbt "test:testOnly *AnalysisSuite.scala
```
### Was this patch authored or co-authored using generative AI tooling?
No
Closes #50336 from the-sakthi/SPARK-51162.
Authored-by: Sakthi <sak...@apache.org>
Signed-off-by: Max Gekk <max.g...@gmail.com>
---
.../spark/sql/catalyst/parser/SqlBaseParser.g4 | 2 +-
.../sql/catalyst/util/SparkDateTimeUtils.scala | 33 ++++++
.../sql/catalyst/analysis/FunctionRegistry.scala | 1 +
.../analysis/LiteralFunctionResolution.scala | 15 +--
.../sql/catalyst/expressions/timeExpressions.scala | 114 ++++++++++++++++++++-
.../sql/catalyst/optimizer/finishAnalysis.scala | 6 ++
.../spark/sql/catalyst/parser/AstBuilder.scala | 4 +-
.../sql/catalyst/analysis/AnalysisSuite.scala | 19 ++++
.../analysis/ResolveInlineTablesSuite.scala | 30 +++++-
.../expressions/TimeExpressionsSuite.scala | 49 ++++++++-
.../optimizer/ComputeCurrentTimeSuite.scala | 94 ++++++++++++++++-
.../catalyst/parser/ExpressionParserSuite.scala | 4 +-
.../sql-functions/sql-expression-schema.md | 1 +
.../org/apache/spark/sql/SQLQueryTestHelper.scala | 5 +-
.../sql/expressions/ExpressionInfoSuite.scala | 1 +
15 files changed, 357 insertions(+), 21 deletions(-)
diff --git
a/sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4
b/sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4
index ec23c7346216..746c9d9386d0 100644
---
a/sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4
+++
b/sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4
@@ -1155,7 +1155,7 @@ datetimeUnit
;
primaryExpression
- : name=(CURRENT_DATE | CURRENT_TIMESTAMP | CURRENT_USER | USER |
SESSION_USER) #currentLike
+ : name=(CURRENT_DATE | CURRENT_TIMESTAMP | CURRENT_USER | USER |
SESSION_USER | CURRENT_TIME) #currentLike
| name=(TIMESTAMPADD | DATEADD | DATE_ADD) LEFT_PAREN (unit=datetimeUnit |
invalidUnit=stringLit) COMMA unitsAmount=valueExpression COMMA
timestamp=valueExpression RIGHT_PAREN #timestampadd
| name=(TIMESTAMPDIFF | DATEDIFF | DATE_DIFF | TIMEDIFF) LEFT_PAREN
(unit=datetimeUnit | invalidUnit=stringLit) COMMA
startTimestamp=valueExpression COMMA endTimestamp=valueExpression RIGHT_PAREN
#timestampdiff
| CASE whenClause+ (ELSE elseExpression=expression)? END
#searchedCase
diff --git
a/sql/api/src/main/scala/org/apache/spark/sql/catalyst/util/SparkDateTimeUtils.scala
b/sql/api/src/main/scala/org/apache/spark/sql/catalyst/util/SparkDateTimeUtils.scala
index 73fbebeb98c5..b16ee9ad1929 100644
---
a/sql/api/src/main/scala/org/apache/spark/sql/catalyst/util/SparkDateTimeUtils.scala
+++
b/sql/api/src/main/scala/org/apache/spark/sql/catalyst/util/SparkDateTimeUtils.scala
@@ -133,6 +133,39 @@ trait SparkDateTimeUtils {
}
}
+ /**
+ * Gets the number of microseconds since midnight using the session time
zone.
+ */
+ def instantToMicrosOfDay(instant: Instant, timezone: String): Long = {
+ val zoneId = getZoneId(timezone)
+ val localDateTime = LocalDateTime.ofInstant(instant, zoneId)
+ localDateTime.toLocalTime.getLong(MICRO_OF_DAY)
+ }
+
+ /**
+ * Truncates a time value (in microseconds) to the specified fractional
precision `p`.
+ *
+ * For example, if `p = 3`, we keep millisecond resolution and discard any
digits beyond the
+ * thousand-microsecond place. So a value like `123456` microseconds
(12:34:56.123456) becomes
+ * `123000` microseconds (12:34:56.123).
+ *
+ * @param micros
+ * The original time in microseconds.
+ * @param p
+ * The fractional second precision (range 0 to 6).
+ * @return
+ * The truncated microsecond value, preserving only `p` fractional digits.
+ */
+ def truncateTimeMicrosToPrecision(micros: Long, p: Int): Long = {
+ assert(
+ p >= TimeType.MIN_PRECISION && p <= TimeType.MICROS_PRECISION,
+ s"Fractional second precision $p out" +
+ s" of range
[${TimeType.MIN_PRECISION}..${TimeType.MICROS_PRECISION}].")
+ val scale = TimeType.MICROS_PRECISION - p
+ val factor = math.pow(10, scale).toLong
+ (micros / factor) * factor
+ }
+
/**
* Converts the timestamp `micros` from one timezone to another.
*
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
index 537469b2af27..7ffeedcf9474 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
@@ -627,6 +627,7 @@ object FunctionRegistry {
expression[CurrentDate]("current_date"),
expressionBuilder("curdate", CurDateExpressionBuilder, setAlias = true),
expression[CurrentTimestamp]("current_timestamp"),
+ expression[CurrentTime]("current_time"),
expression[CurrentTimeZone]("current_timezone"),
expression[LocalTimestamp]("localtimestamp"),
expression[DateDiff]("datediff"),
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/LiteralFunctionResolution.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/LiteralFunctionResolution.scala
index c7faf0536b77..865a780b61da 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/LiteralFunctionResolution.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/LiteralFunctionResolution.scala
@@ -17,16 +17,7 @@
package org.apache.spark.sql.catalyst.analysis
-import org.apache.spark.sql.catalyst.expressions.{
- Alias,
- CurrentDate,
- CurrentTimestamp,
- CurrentUser,
- Expression,
- GroupingID,
- NamedExpression,
- VirtualColumn
-}
+import org.apache.spark.sql.catalyst.expressions.{Alias, CurrentDate,
CurrentTime, CurrentTimestamp, CurrentUser, Expression, GroupingID,
NamedExpression, VirtualColumn}
import org.apache.spark.sql.catalyst.util.toPrettySQL
/**
@@ -47,10 +38,12 @@ object LiteralFunctionResolution {
}
}
- // support CURRENT_DATE, CURRENT_TIMESTAMP, CURRENT_USER, USER, SESSION_USER
and grouping__id
+ // support CURRENT_DATE, CURRENT_TIMESTAMP, CURRENT_TIME,
+ // CURRENT_USER, USER, SESSION_USER and grouping__id
private val literalFunctions: Seq[(String, () => Expression, Expression =>
String)] = Seq(
(CurrentDate().prettyName, () => CurrentDate(), toPrettySQL(_)),
(CurrentTimestamp().prettyName, () => CurrentTimestamp(), toPrettySQL(_)),
+ (CurrentTime().prettyName, () => CurrentTime(), toPrettySQL(_)),
(CurrentUser().prettyName, () => CurrentUser(), toPrettySQL),
("user", () => CurrentUser(), toPrettySQL),
("session_user", () => CurrentUser(), toPrettySQL),
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/timeExpressions.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/timeExpressions.scala
index 8b4fa13fe276..505b00231ecd 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/timeExpressions.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/timeExpressions.scala
@@ -19,13 +19,17 @@ package org.apache.spark.sql.catalyst.expressions
import java.time.DateTimeException
-import org.apache.spark.sql.catalyst.analysis.ExpressionBuilder
+import org.apache.spark.sql.catalyst.analysis.{ExpressionBuilder,
TypeCheckResult}
+import
org.apache.spark.sql.catalyst.analysis.TypeCheckResult.{DataTypeMismatch,
TypeCheckSuccess}
+import org.apache.spark.sql.catalyst.expressions.Cast.{toSQLExpr, toSQLId,
toSQLType, toSQLValue}
import org.apache.spark.sql.catalyst.expressions.objects.{Invoke, StaticInvoke}
+import org.apache.spark.sql.catalyst.trees.TreePattern.{CURRENT_LIKE,
TreePattern}
import org.apache.spark.sql.catalyst.util.DateTimeUtils
import org.apache.spark.sql.catalyst.util.TimeFormatter
+import org.apache.spark.sql.catalyst.util.TypeUtils.{ordinalNumber}
import org.apache.spark.sql.errors.{QueryCompilationErrors,
QueryExecutionErrors}
import org.apache.spark.sql.internal.types.StringTypeWithCollation
-import org.apache.spark.sql.types.{AbstractDataType, IntegerType, ObjectType,
TimeType, TypeCollection}
+import org.apache.spark.sql.types.{AbstractDataType, DataType, IntegerType,
ObjectType, TimeType, TypeCollection}
import org.apache.spark.unsafe.types.UTF8String
/**
@@ -349,3 +353,109 @@ object SecondExpressionBuilder extends ExpressionBuilder {
}
}
+/**
+ * Returns the current time at the start of query evaluation.
+ * There is no code generation since this expression should get constant
folded by the optimizer.
+ */
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = """
+ _FUNC_([precision]) - Returns the current time at the start of query
evaluation.
+ All calls of current_time within the same query return the same value.
+
+ _FUNC_ - Returns the current time at the start of query evaluation.
+ """,
+ arguments = """
+ Arguments:
+ * precision - An optional integer literal in the range [0..6],
indicating how many
+ fractional digits of seconds to include. If omitted, the
default is 6.
+ """,
+ examples = """
+ Examples:
+ > SELECT _FUNC_();
+ 15:49:11.914120
+ > SELECT _FUNC_;
+ 15:49:11.914120
+ > SELECT _FUNC_(0);
+ 15:49:11
+ > SELECT _FUNC_(3);
+ 15:49:11.914
+ > SELECT _FUNC_(1+1);
+ 15:49:11.91
+ """,
+ group = "datetime_funcs",
+ since = "4.1.0"
+)
+case class CurrentTime(child: Expression = Literal(TimeType.MICROS_PRECISION))
+ extends UnaryExpression with FoldableUnevaluable with ImplicitCastInputTypes
{
+
+ def this() = {
+ this(Literal(TimeType.MICROS_PRECISION))
+ }
+
+ final override val nodePatterns: Seq[TreePattern] = Seq(CURRENT_LIKE)
+
+ override def nullable: Boolean = false
+
+ override def checkInputDataTypes(): TypeCheckResult = {
+ // Check foldability
+ if (!child.foldable) {
+ return DataTypeMismatch(
+ errorSubClass = "NON_FOLDABLE_INPUT",
+ messageParameters = Map(
+ "inputName" -> toSQLId("precision"),
+ "inputType" -> toSQLType(child.dataType),
+ "inputExpr" -> toSQLExpr(child)
+ )
+ )
+ }
+
+ // Evaluate
+ val precisionValue = child.eval()
+ if (precisionValue == null) {
+ return DataTypeMismatch(
+ errorSubClass = "UNEXPECTED_NULL",
+ messageParameters = Map("exprName" -> "precision"))
+ }
+
+ // Check numeric range
+ precisionValue match {
+ case n: Number =>
+ val p = n.intValue()
+ if (p < TimeType.MIN_PRECISION || p > TimeType.MICROS_PRECISION) {
+ return DataTypeMismatch(
+ errorSubClass = "VALUE_OUT_OF_RANGE",
+ messageParameters = Map(
+ "exprName" -> toSQLId("precision"),
+ "valueRange" -> s"[${TimeType.MIN_PRECISION},
${TimeType.MICROS_PRECISION}]",
+ "currentValue" -> toSQLValue(p, IntegerType)
+ )
+ )
+ }
+ case _ =>
+ return DataTypeMismatch(
+ errorSubClass = "UNEXPECTED_INPUT_TYPE",
+ messageParameters = Map(
+ "paramIndex" -> ordinalNumber(0),
+ "requiredType" -> toSQLType(IntegerType),
+ "inputSql" -> toSQLExpr(child),
+ "inputType" -> toSQLType(child.dataType))
+ )
+ }
+ TypeCheckSuccess
+ }
+
+ // Because checkInputDataTypes ensures the argument is foldable & valid,
+ // we can directly evaluate here.
+ lazy val precision: Int = child.eval().asInstanceOf[Number].intValue()
+
+ override def dataType: DataType = TimeType(precision)
+
+ override def prettyName: String = "current_time"
+
+ override protected def withNewChildInternal(newChild: Expression):
Expression = {
+ copy(child = newChild)
+ }
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(IntegerType)
+}
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/finishAnalysis.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/finishAnalysis.scala
index 0fbfce5962c7..21e09f2e56d1 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/finishAnalysis.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/finishAnalysis.scala
@@ -31,6 +31,7 @@ import org.apache.spark.sql.catalyst.trees.TreePattern._
import org.apache.spark.sql.catalyst.trees.TreePatternBits
import org.apache.spark.sql.catalyst.util.DateTimeUtils
import org.apache.spark.sql.catalyst.util.DateTimeUtils.{convertSpecialDate,
convertSpecialTimestamp, convertSpecialTimestampNTZ, instantToMicros,
localDateTimeToMicros}
+import
org.apache.spark.sql.catalyst.util.SparkDateTimeUtils.{instantToMicrosOfDay,
truncateTimeMicrosToPrecision}
import org.apache.spark.sql.catalyst.util.TypeUtils.toSQLExpr
import org.apache.spark.sql.connector.catalog.CatalogManager
import org.apache.spark.sql.types._
@@ -113,6 +114,7 @@ object ComputeCurrentTime extends Rule[LogicalPlan] {
val instant = Instant.now()
val currentTimestampMicros = instantToMicros(instant)
val currentTime = Literal.create(currentTimestampMicros, TimestampType)
+ val currentTimeOfDayMicros = instantToMicrosOfDay(instant,
conf.sessionLocalTimeZone)
val timezone = Literal.create(conf.sessionLocalTimeZone, StringType)
val currentDates = collection.mutable.HashMap.empty[ZoneId, Literal]
val localTimestamps = collection.mutable.HashMap.empty[ZoneId, Literal]
@@ -129,6 +131,10 @@ object ComputeCurrentTime extends Rule[LogicalPlan] {
Literal.create(
DateTimeUtils.microsToDays(currentTimestampMicros, cd.zoneId),
DateType)
})
+ case currentTimeType : CurrentTime =>
+ val truncatedTime =
truncateTimeMicrosToPrecision(currentTimeOfDayMicros,
+ currentTimeType.precision)
+ Literal.create(truncatedTime, TimeType(currentTimeType.precision))
case CurrentTimestamp() | Now() => currentTime
case CurrentTimeZone() => timezone
case localTimestamp: LocalTimestamp =>
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
index b40075fcccee..d8ce90f40b89 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
@@ -2888,12 +2888,14 @@ class AstBuilder extends DataTypeAstBuilder
CurrentDate()
case SqlBaseParser.CURRENT_TIMESTAMP =>
CurrentTimestamp()
+ case SqlBaseParser.CURRENT_TIME =>
+ CurrentTime()
case SqlBaseParser.CURRENT_USER | SqlBaseParser.USER |
SqlBaseParser.SESSION_USER =>
CurrentUser()
}
} else {
// If the parser is not in ansi mode, we should return
`UnresolvedAttribute`, in case there
- // are columns named `CURRENT_DATE` or `CURRENT_TIMESTAMP`.
+ // are columns named `CURRENT_DATE` or `CURRENT_TIMESTAMP` or
`CURRENT_TIME`
UnresolvedAttribute.quoted(ctx.name.getText)
}
}
diff --git
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisSuite.scala
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisSuite.scala
index eab4ddc666be..f0dabfd976a7 100644
---
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisSuite.scala
+++
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisSuite.scala
@@ -819,6 +819,25 @@ class AnalysisSuite extends AnalysisTest with Matchers {
}
}
+ test("CURRENT_TIME should be case insensitive") {
+ withSQLConf(SQLConf.CASE_SENSITIVE.key -> "true") {
+ val input = Project(Seq(
+ // The user references "current_time" or "CURRENT_TIME" in the query
+ UnresolvedAttribute("current_time"),
+ UnresolvedAttribute("CURRENT_TIME")
+ ), testRelation)
+
+ // The analyzer should resolve both to the same expression: CurrentTime()
+ val expected = Project(Seq(
+ Alias(CurrentTime(), toPrettySQL(CurrentTime()))(),
+ Alias(CurrentTime(), toPrettySQL(CurrentTime()))()
+ ), testRelation).analyze
+
+ checkAnalysis(input, expected)
+ }
+ }
+
+
test("CTE with non-existing column alias") {
assertAnalysisErrorCondition(parsePlan("WITH t(x) AS (SELECT 1) SELECT *
FROM t WHERE y = 1"),
"UNRESOLVED_COLUMN.WITH_SUGGESTION",
diff --git
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/ResolveInlineTablesSuite.scala
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/ResolveInlineTablesSuite.scala
index f231164d5c25..662c740e2f96 100644
---
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/ResolveInlineTablesSuite.scala
+++
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/ResolveInlineTablesSuite.scala
@@ -21,11 +21,11 @@ import org.scalatest.BeforeAndAfter
import org.apache.spark.sql.AnalysisException
import org.apache.spark.sql.catalyst.EvaluateUnresolvedInlineTable
-import org.apache.spark.sql.catalyst.expressions.{Alias, Cast,
CurrentTimestamp, Literal, Rand}
+import org.apache.spark.sql.catalyst.expressions.{Alias, Cast, CurrentTime,
CurrentTimestamp, Literal, Rand}
import org.apache.spark.sql.catalyst.expressions.aggregate.Count
import org.apache.spark.sql.catalyst.optimizer.{ComputeCurrentTime,
EvalInlineTables}
import org.apache.spark.sql.catalyst.plans.logical.LocalRelation
-import org.apache.spark.sql.types.{LongType, NullType, TimestampType}
+import org.apache.spark.sql.types.{LongType, NullType, TimestampType, TimeType}
/**
* Unit tests for [[ResolveInlineTables]]. Note that there are also test cases
defined in
@@ -113,6 +113,32 @@ class ResolveInlineTablesSuite extends AnalysisTest with
BeforeAndAfter {
}
}
+ test("cast and execute CURRENT_TIME expressions") {
+ val table = UnresolvedInlineTable(
+ Seq("c1"),
+ Seq(
+ Seq(CurrentTime()),
+ Seq(CurrentTime())
+ )
+ )
+ val resolved = ResolveInlineTables(table)
+ assert(resolved.isInstanceOf[ResolvedInlineTable],
+ "Expected an inline table to be resolved into a ResolvedInlineTable")
+
+ val transformed = ComputeCurrentTime(resolved)
+ EvalInlineTables(transformed) match {
+ case LocalRelation(output, data, _, _) =>
+ // expect default precision = 6
+ assert(output.map(_.dataType) == Seq(TimeType(6)))
+ // Should have 2 rows
+ assert(data.size == 2)
+ // Both rows should have the *same* microsecond value for current_time
+ assert(data(0).getLong(0) == data(1).getLong(0),
+ "Both CURRENT_TIME calls must yield the same value in the same
query")
+ }
+ }
+
+
test("convert TimeZoneAwareExpression") {
val table = UnresolvedInlineTable(Seq("c1"),
Seq(Seq(Cast(lit("1991-12-06 00:00:00.0"), TimestampType))))
diff --git
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/TimeExpressionsSuite.scala
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/TimeExpressionsSuite.scala
index e0aebb46ccce..add505321b8c 100644
---
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/TimeExpressionsSuite.scala
+++
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/TimeExpressionsSuite.scala
@@ -19,8 +19,10 @@ package org.apache.spark.sql.catalyst.expressions
import org.apache.spark.{SPARK_DOC_ROOT, SparkDateTimeException, SparkFunSuite}
import org.apache.spark.sql.AnalysisException
+import
org.apache.spark.sql.catalyst.analysis.TypeCheckResult.{DataTypeMismatch,
TypeCheckSuccess}
+import org.apache.spark.sql.catalyst.expressions.Cast.{toSQLId, toSQLValue}
import org.apache.spark.sql.catalyst.util.DateTimeTestUtils._
-import org.apache.spark.sql.types.{StringType, TimeType}
+import org.apache.spark.sql.types.{IntegerType, StringType, TimeType}
class TimeExpressionsSuite extends SparkFunSuite with ExpressionEvalHelper {
test("ParseToTime") {
@@ -226,4 +228,49 @@ class TimeExpressionsSuite extends SparkFunSuite with
ExpressionEvalHelper {
checkConsistencyBetweenInterpretedAndCodegen(
(child: Expression) => SecondsOfTime(child).replacement, TimeType())
}
+
+ test("CurrentTime") {
+ // test valid precision
+ var expr = CurrentTime(Literal(3))
+ assert(expr.dataType == TimeType(3), "Should produce TIME(3) data type")
+ assert(expr.checkInputDataTypes() == TypeCheckSuccess)
+
+ // test default constructor => TIME(6)
+ expr = CurrentTime()
+ assert(expr.precision == 6, "Default precision should be 6")
+ assert(expr.dataType == TimeType(6))
+ assert(expr.checkInputDataTypes() == TypeCheckSuccess)
+
+ // test no value => TIME()
+ expr = CurrentTime()
+ assert(expr.precision == 6, "Default precision should be 6")
+ assert(expr.dataType == TimeType(6))
+ assert(expr.checkInputDataTypes() == TypeCheckSuccess)
+
+ // test foldable value
+ expr = CurrentTime(Literal(1 + 1))
+ assert(expr.precision == 2, "Precision should be 2")
+ assert(expr.dataType == TimeType(2))
+ assert(expr.checkInputDataTypes() == TypeCheckSuccess)
+
+ // test out of range precision => checkInputDataTypes fails
+ expr = CurrentTime(Literal(2 + 8))
+ assert(expr.checkInputDataTypes() ==
+ DataTypeMismatch(
+ errorSubClass = "VALUE_OUT_OF_RANGE",
+ messageParameters = Map(
+ "exprName" -> toSQLId("precision"),
+ "valueRange" -> s"[${TimeType.MIN_PRECISION},
${TimeType.MICROS_PRECISION}]",
+ "currentValue" -> toSQLValue(10, IntegerType)
+ )
+ )
+ )
+
+ // test non number value should fail since we skip analyzer here
+ expr = CurrentTime(Literal("2"))
+ val failure = intercept[ClassCastException] {
+ expr.precision
+ }
+ assert(failure.getMessage.contains("cannot be cast to class
java.lang.Number"))
+ }
}
diff --git
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ComputeCurrentTimeSuite.scala
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ComputeCurrentTimeSuite.scala
index 6e1c7fc887d4..3fa6459a93e2 100644
---
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ComputeCurrentTimeSuite.scala
+++
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ComputeCurrentTimeSuite.scala
@@ -24,12 +24,13 @@ import scala.concurrent.duration._
import scala.jdk.CollectionConverters.MapHasAsScala
import org.apache.spark.sql.catalyst.dsl.plans._
-import org.apache.spark.sql.catalyst.expressions.{Alias, CurrentDate,
CurrentTimestamp, CurrentTimeZone, Expression, InSubquery, ListQuery, Literal,
LocalTimestamp, Now}
+import org.apache.spark.sql.catalyst.expressions.{Add, Alias, Cast,
CurrentDate, CurrentTime, CurrentTimestamp, CurrentTimeZone, Expression,
InSubquery, ListQuery, Literal, LocalTimestamp, Now}
import org.apache.spark.sql.catalyst.plans.PlanTest
import org.apache.spark.sql.catalyst.plans.logical.{Filter, LocalRelation,
LogicalPlan, Project}
import org.apache.spark.sql.catalyst.rules.RuleExecutor
import org.apache.spark.sql.catalyst.util.DateTimeUtils
import org.apache.spark.sql.internal.SQLConf
+import org.apache.spark.sql.types.IntegerType
import org.apache.spark.unsafe.types.UTF8String
class ComputeCurrentTimeSuite extends PlanTest {
@@ -52,6 +53,83 @@ class ComputeCurrentTimeSuite extends PlanTest {
assert(lits(0) == lits(1))
}
+ test("analyzer should replace current_time with literals") {
+ // logical plan that calls current_time() twice in the Project
+ val planInput = Project(
+ Seq(
+ Alias(CurrentTime(Literal(3)), "a")(),
+ Alias(CurrentTime(Literal(3)), "b")()
+ ),
+ LocalRelation()
+ )
+
+ val analyzed = planInput.analyze
+ val optimized = Optimize.execute(analyzed).asInstanceOf[Project]
+
+ // We expect 2 literals in the final Project. Each literal is a Long
+ // representing microseconds since midnight, truncated to precision=3.
+ val lits = literals[Long](optimized) // a helper that extracts all
Literal values of type Long
+ assert(lits.size == 2, s"Expected two literal values, found ${lits.size}")
+
+ // The rule should produce the same microsecond value for both columns "a"
and "b".
+ assert(lits(0) == lits(1),
+ s"Expected both current_time(3) calls to yield the same literal, " +
+ s"but got ${lits(0)} vs ${lits(1)}")
+ }
+
+ test("analyzer should replace current_time with foldable child expressions")
{
+ // We build a plan that calls current_time(2 + 1) twice
+ val foldableExpr = Add(Literal(2), Literal(1)) // a foldable arithmetic
expression => 3
+ val planInput = Project(
+ Seq(
+ Alias(CurrentTime(foldableExpr), "a")(),
+ Alias(CurrentTime(foldableExpr), "b")()
+ ),
+ LocalRelation()
+ )
+
+ val analyzed = planInput.analyze
+ val optimized = Optimize.execute(analyzed).asInstanceOf[Project]
+
+ // We expect the optimizer to replace current_time(2 + 1) with a literal
time value,
+ // so let's extract those literal values.
+ val lits = literals[Long](optimized)
+ assert(lits.size == 2, s"Expected two literal values, found ${lits.size}")
+
+ // Both references to current_time(2 + 1) should be replaced by the same
microsecond-of-day
+ assert(lits(0) == lits(1),
+ s"Expected both current_time(2 + 1) calls to yield the same literal, " +
+ s"but got ${lits(0)} vs. ${lits(1)}"
+ )
+ }
+
+ test("analyzer should replace current_time with foldable casted
string-literal") {
+ // We'll build a foldable cast expression: CAST(' 0005 ' AS INT) => 5
+ val castExpr = Cast(Literal(" 0005 "), IntegerType)
+
+ // Two references to current_time(castExpr) => so we can check they're
replaced consistently
+ val planInput = Project(
+ Seq(
+ Alias(CurrentTime(castExpr), "a")(),
+ Alias(CurrentTime(castExpr), "b")()
+ ),
+ LocalRelation()
+ )
+
+ val analyzed = planInput.analyze
+ val optimized = Optimize.execute(analyzed).asInstanceOf[Project]
+
+ val lits = literals[Long](optimized)
+ assert(lits.size == 2, s"Expected two literal values, found ${lits.size}")
+
+ // Both references to current_time(CAST(' 0005 ' AS INT)) in the same query
+ // should produce the same microsecond-of-day literal.
+ assert(lits(0) == lits(1),
+ s"Expected both references to yield the same literal, but got ${lits(0)}
vs. ${lits(1)}"
+ )
+ }
+
+
test("analyzer should respect time flow in current timestamp calls") {
val in = Project(Alias(CurrentTimestamp(), "t1")() :: Nil, LocalRelation())
@@ -65,6 +143,20 @@ class ComputeCurrentTimeSuite extends PlanTest {
assert(t2 - t1 <= 1000 && t2 - t1 > 0)
}
+ test("analyzer should respect time flow in current_time calls") {
+ val in = Project(Alias(CurrentTime(Literal(4)), "t1")() :: Nil,
LocalRelation())
+
+ val planT1 = Optimize.execute(in.analyze).asInstanceOf[Project]
+ sleep(5)
+ val planT2 = Optimize.execute(in.analyze).asInstanceOf[Project]
+
+ val t1 = literals[Long](planT1)(0) // the microseconds-of-day for planT1
+ val t2 = literals[Long](planT2)(0) // the microseconds-of-day for planT2
+
+ assert(t2 > t1, s"Expected a newer time in the second analysis, but got
t1=$t1, t2=$t2")
+ }
+
+
test("analyzer should replace current_date with literals") {
val in = Project(Seq(Alias(CurrentDate(), "a")(), Alias(CurrentDate(),
"b")()), LocalRelation())
diff --git
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/ExpressionParserSuite.scala
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/ExpressionParserSuite.scala
index 2cae4e4fe95f..17b03946251a 100644
---
a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/ExpressionParserSuite.scala
+++
b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/ExpressionParserSuite.scala
@@ -1194,16 +1194,18 @@ class ExpressionParserSuite extends AnalysisTest {
}
}
- test("current date/timestamp braceless expressions") {
+ test("current date/timestamp/time braceless expressions") {
withSQLConf(SQLConf.ANSI_ENABLED.key -> "true",
SQLConf.ENFORCE_RESERVED_KEYWORDS.key -> "true") {
assertEqual("current_date", CurrentDate())
assertEqual("current_timestamp", CurrentTimestamp())
+ assertEqual("current_time", CurrentTime())
}
def testNonAnsiBehavior(): Unit = {
assertEqual("current_date", UnresolvedAttribute.quoted("current_date"))
assertEqual("current_timestamp",
UnresolvedAttribute.quoted("current_timestamp"))
+ assertEqual("current_time", UnresolvedAttribute.quoted("current_time"))
}
withSQLConf(
SQLConf.ANSI_ENABLED.key -> "false",
diff --git a/sql/core/src/test/resources/sql-functions/sql-expression-schema.md
b/sql/core/src/test/resources/sql-functions/sql-expression-schema.md
index 2a3f28fe496c..f2301c4526b8 100644
--- a/sql/core/src/test/resources/sql-functions/sql-expression-schema.md
+++ b/sql/core/src/test/resources/sql-functions/sql-expression-schema.md
@@ -104,6 +104,7 @@
| org.apache.spark.sql.catalyst.expressions.CurrentDatabase | current_database
| SELECT current_database() | struct<current_schema():string> |
| org.apache.spark.sql.catalyst.expressions.CurrentDatabase | current_schema |
SELECT current_schema() | struct<current_schema():string> |
| org.apache.spark.sql.catalyst.expressions.CurrentDate | current_date |
SELECT current_date() | struct<current_date():date> |
+| org.apache.spark.sql.catalyst.expressions.CurrentTime | current_time |
SELECT current_time() | struct<current_time(6):time(6)> |
| org.apache.spark.sql.catalyst.expressions.CurrentTimeZone | current_timezone
| SELECT current_timezone() | struct<current_timezone():string> |
| org.apache.spark.sql.catalyst.expressions.CurrentTimestamp |
current_timestamp | SELECT current_timestamp() |
struct<current_timestamp():timestamp> |
| org.apache.spark.sql.catalyst.expressions.CurrentUser | current_user |
SELECT current_user() | struct<current_user():string> |
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestHelper.scala
b/sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestHelper.scala
index e807ae306ce7..cd54161f54ac 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestHelper.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestHelper.scala
@@ -27,7 +27,7 @@ import org.apache.spark.ErrorMessageFormat.MINIMAL
import org.apache.spark.SparkThrowableHelper.getMessage
import org.apache.spark.internal.Logging
import org.apache.spark.sql.IntegratedUDFTestUtils.{TestUDF, TestUDTFSet}
-import org.apache.spark.sql.catalyst.expressions.{CurrentDate,
CurrentTimestampLike, CurrentUser, Literal}
+import org.apache.spark.sql.catalyst.expressions.{CurrentDate, CurrentTime,
CurrentTimestampLike, CurrentUser, Literal}
import org.apache.spark.sql.catalyst.planning.PhysicalOperation
import org.apache.spark.sql.catalyst.plans.logical._
import org.apache.spark.sql.catalyst.util.fileToString
@@ -101,6 +101,9 @@ trait SQLQueryTestHelper extends Logging {
case expr: CurrentTimestampLike =>
deterministic = false
expr
+ case expr: CurrentTime =>
+ deterministic = false
+ expr
case expr: CurrentUser =>
deterministic = false
expr
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/expressions/ExpressionInfoSuite.scala
b/sql/core/src/test/scala/org/apache/spark/sql/expressions/ExpressionInfoSuite.scala
index a7af22a0554e..e90907b904bd 100644
---
a/sql/core/src/test/scala/org/apache/spark/sql/expressions/ExpressionInfoSuite.scala
+++
b/sql/core/src/test/scala/org/apache/spark/sql/expressions/ExpressionInfoSuite.scala
@@ -209,6 +209,7 @@ class ExpressionInfoSuite extends SparkFunSuite with
SharedSparkSession {
"org.apache.spark.sql.catalyst.expressions.CurrentTimeZone",
"org.apache.spark.sql.catalyst.expressions.Now",
"org.apache.spark.sql.catalyst.expressions.LocalTimestamp",
+ "org.apache.spark.sql.catalyst.expressions.CurrentTime",
// Random output without a seed
"org.apache.spark.sql.catalyst.expressions.Rand",
"org.apache.spark.sql.catalyst.expressions.Randn",
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