SQL休眠查询语言（HQL）-缺少IN

Question

Desired SQL statement to convert

select * from tableA where columnA is not null 
order by cast(columnA as int), columnB
union all
select * from app_data_program where columnA is null order by columnB

My HQL attempt:

From TableA a where a.columnA is not null 
order by cast(a.columnA as int), a.columnB 
union all TableA b where b.columnA is not null order by b.columnB

When I converted the HQL to SQL to test as a result, i get the following:

SQL Error: Missing IN or OUT parameter at index:: 1

Answer 1

HQL doesn't allow use UNION ALL sql construct.

You must execute two different queries and then you can merge the results of them.

So you'll have:

First query:

From TableA a where a.columnA is not null 
order by cast(a.columnA as int), a.columnB

Second query:

TableA b where b.columnA is not null order by b.columnB