GROUP_CONCAT(JSON_QUOTE(a.name)) , ']') AS JSON) AS product_attributes FROM product as p JOIN value AS v ON p.id=v.prod_id JOIN attribute as a ON a.id=v.attribute_id GROUP BY v.prod_id; SELECT JSON_OBJECT("key",
3.2. Using CONCAT Function The CONCAT function typically handles NULL values by treating them as empty strings: SELECT CONCAT('Course: ', textbook, ' for ', name) AS course_description FROM Course; 3.3. Using COALESCE Function TheCOALESCEfunction returns the first non-NULL value from the list ...
AggregationFunctionExpression(java.lang.String functionName, FunctionArgument arg, AggregateOverClause overClause) Creates an AggregationFunctionExpression that resolves to the aggregation function with the function argument and OVER clause. AggregationFunctionExpression(java.lang.String functionName, java.util...
End Functionand the expression for my Customer Id has the value:= RunningValue(Code.ConcatSalesIds(Fields!CustomerID.Value, Fields!SalesOrderID.Value), Last, "custGroup")where "custGroup" is the grouping done on Fields!CustomerID.Value
The query below shows theCOLLECTfunction in action. COLUMN employees FORMAT A50 SELECT deptno, tab_to_string(CAST(COLLECT(ename) AS t_varchar2_tab)) AS employees FROM emp GROUP BY deptno; DEPTNO EMPLOYEES --- --- 10 CLARK,KING,MILLER 20 SMITH,JONES,SCOTT,ADAMS,FORD 30 ALLEN,WARD,MARTIN...
Optional. Arguments passed to theinitfunction. initArgshas the following form: [ <initArg1>, <initArg2>, ... ] IMPORTANT:When used in a$bucketAutostage,initArgscannot refer to the group key (i.e., you cannot use the$<fieldName>syntax). Instead, in a$bucketAutostage, you can only ...
rank $derivative $divide $documentnumber $eq $exp $expmovingavg $filter $first $firstn $floor $function $getfield $gt $gte $hour $ifnull $in $indexofarray $indexofbytes $indexofcp $integral $isarray $isnumber $isodayofweek $isoweek $isoweekyear $last $lastn $let $linearfill $literal...
$group $setWindowFields starting in MongoDB 5.0 (except when you are using the $accumulator or $mergeObjects operators, which cannot be used with $setWindowFields) Changed in version 5.0. Name Description $accumulator Returns the result of a user-defined accumulator function. $addToSet Returns an...
The AVG function is also converted to a combination of SUM and COUNT. > explain select avg(age) from t2 group by name Project(avg(age)="sum_pushed_sum / sum_pushed_count") HashAgg(group="name", sum_pushed_sum="SUM(pushed_sum)", sum_pushed_count="SUM(pushed_count)") Gather(...
changed in version 5.0 . name description returns the result of a user-defined accumulator function. returns an array of unique expression values for each group. order of the array elements is undefined. changed in version 5.0 : available in the $setwindowfields stage. returns an average of ...