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SQL: Add alias DATETRUNC to DATE_TRUNC function #47173

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merged 3 commits into from
Sep 27, 2019
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SQL: Add alias DATETRUNC to DATE_TRUNC function #47173

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07d22a8
SQL: Add alias DATETRUNC to DATE_TRUNC function
matriv Sep 26, 2019
a8a006a
Merge remote-tracking branch 'upstream/master' into add-alias-datetrunc
matriv Sep 27, 2019
f78771e
mention the null behaviour
matriv Sep 27, 2019
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4 changes: 2 additions & 2 deletions docs/reference/sql/functions/date-time.asciidoc
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Expand Up @@ -249,7 +249,7 @@ Currently, using a _precision_ greater than 3 doesn't make any difference to the
function as the maximum number of second fractional digits returned is 3 (milliseconds).

[[sql-functions-datetime-trunc]]
==== `DATE_TRUNC`
==== `DATE_TRUNC/DATETRUNC`

.Synopsis:
[source, sql]
Expand All @@ -269,7 +269,7 @@ DATE_TRUNC(
.Description:

Truncate the date/datetime to the specified unit by setting all fields that are less significant than the specified
one to zero (or one, for day, day of week and month).
one to zero (or one, for day, day of week and month). If any of the two arguments is `null` a `null` is returned.

[cols="^,^"]
|===
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1 change: 1 addition & 0 deletions x-pack/plugin/sql/qa/src/main/resources/command.csv-spec
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Expand Up @@ -39,6 +39,7 @@ CURRENT_DATE |SCALAR
CURRENT_TIME |SCALAR
CURRENT_TIMESTAMP|SCALAR
CURTIME |SCALAR
DATETRUNC |SCALAR
DATE_TRUNC |SCALAR
DAY |SCALAR
DAYNAME |SCALAR
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5 changes: 3 additions & 2 deletions x-pack/plugin/sql/qa/src/main/resources/docs/docs.csv-spec
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Expand Up @@ -235,6 +235,7 @@ CURRENT_DATE |SCALAR
CURRENT_TIME |SCALAR
CURRENT_TIMESTAMP|SCALAR
CURTIME |SCALAR
DATETRUNC |SCALAR
DATE_TRUNC |SCALAR
DAY |SCALAR
DAYNAME |SCALAR
Expand Down Expand Up @@ -2425,7 +2426,7 @@ SELECT DATE_TRUNC('millennium', '2019-09-04T11:22:33.123Z'::datetime) AS millenn

truncateDateTimeWeek
// tag::truncateDateTimeWeek
SELECT DATE_TRUNC('week', '2019-08-24T11:22:33.123Z'::datetime) AS week;
SELECT DATETRUNC('week', '2019-08-24T11:22:33.123Z'::datetime) AS week;

week
------------------------
Expand Down Expand Up @@ -2457,7 +2458,7 @@ SELECT DATE_TRUNC('decade', CAST('2019-09-04' AS DATE)) AS decades;
truncateDateQuarter
schema::quarter:ts
// tag::truncateDateQuarter
SELECT DATE_TRUNC('quarters', CAST('2019-09-04' AS DATE)) AS quarter;
SELECT DATETRUNC('quarters', CAST('2019-09-04' AS DATE)) AS quarter;

quarter
------------------------
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2 changes: 1 addition & 1 deletion ...n/sql/src/main/java/org/elasticsearch/xpack/sql/expression/function/FunctionRegistry.java
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Expand Up @@ -194,7 +194,7 @@ private void defineDefaultFunctions() {
def(DayOfMonth.class, DayOfMonth::new, "DAY_OF_MONTH", "DAYOFMONTH", "DAY", "DOM"),
def(DayOfWeek.class, DayOfWeek::new, "DAY_OF_WEEK", "DAYOFWEEK", "DOW"),
def(DayOfYear.class, DayOfYear::new, "DAY_OF_YEAR", "DAYOFYEAR", "DOY"),
def(DateTrunc.class, DateTrunc::new, "DATE_TRUNC"),
def(DateTrunc.class, DateTrunc::new, "DATETRUNC", "DATE_TRUNC"),
def(HourOfDay.class, HourOfDay::new, "HOUR_OF_DAY", "HOUR"),
def(IsoDayOfWeek.class, IsoDayOfWeek::new, "ISO_DAY_OF_WEEK", "ISODAYOFWEEK", "ISODOW", "IDOW"),
def(IsoWeekOfYear.class, IsoWeekOfYear::new, "ISO_WEEK_OF_YEAR", "ISOWEEKOFYEAR", "ISOWEEK", "IWOY", "IW"),
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