Export ZOQL Clauses

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Export ZOQL Clauses

Overview

Export ZOQL supports the order by, group by, and having clauses. 

Note that Export ZOQL is used for creating exports from Zuora data sources, and uses a different syntax than standard ZOQL.

Order By 

Use the order by clause to sort results in ascending (ASC) or descending (DESC) in the order by clause.

By default, the ZOQL sorts results in ascending order if you do not specify ASC or DESC in the order by clause.

You can specify multiple fields in the order by clause. 

Example

For example, the following two statements will return results in ascending order:

select * from Account order by ID asc;

select * from Account order by ID;

The following demonstrates how to use multiple fields with order by:

select id from account order by ID, name;

Group By

You can use the group by clause to combine rows that have the same values in particular columns. For example:

select select Subscription.Id, count(Account.Id) from RatePlanCharge group by Subscription.Id

In the results of the above query, each row will have a different value of Subscription.Id.

You can specify up to 5 fields in the group by clause. For example:

select Subscription.Id, Account.Id from RatePlanCharge group by Subscription.Id, Account.Id

When you use the group by clause, each field in the select statement must be aggregated or must appear in the group by clause. For example:

select Subscription.Id, count(Account.Id) from RatePlanCharge group by Subscription.Id

In the above example, the Account.Id field is aggregated by the count() function, so Account.Id does not need to appear in the group by clause.

If a field is not aggregated or does not appear in the group by clause, you will receive the following error when you run the query: "One or more columns in the SELECT statement does not appear in the GROUP BY statement."

Having

Use the having clause to return only rows where aggregate values meet the conditions that you specify. 

For example, you can use a having clause as a filter on a group by result. 

Example

select A.a, avg(A.b) from A where B.name is null group by A.a having max(B.c)>0 or (max(B.c) = 0 and (not (A.a >0));

Limit

Use the limit clause to restrict the results returned by a query.

Example

You can use the limit clause to return the first five rows of a query:

select * from account limit 5;

You can use the limit clause to return the 100 rows of a result after the fiftieth row. In this example, the query will return rows 50 through 149. 

select * from account limit 50,100;

Export ZOQL Clause Limits

Export ZOQL clauses have the following limits: 

Limit Description
Maximum Fields on group by clause Maximum of five fields allowed when using group by.
Maximum Conditions Allowed You can have a maximum of 200 conditions in the WHERE clause of a query. For example, you can have up to 200 distinct AND or OR clauses.

If you exceed the maximum number of conditions, the following error message is displayed:

You have exceeded the maximum number of parameters in the Where clause. 
Alias Function Limited Support The alias function is allowed only to define column labels in the result file. You cannot replace an aggregate function with its alias in having or orderby clauses. Duplicate aliases for column labels are not supported.
Nested Aggregate Functions Not Allowed Nested aggregate functions are not allowed.
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