Question

In the Oracle SQL, why this code doesn’t compile? Oracle doesn’t support intersect? intersect only takes one column value?

assume two table have same column types.

Thanks

select B.name, B.id from tmp_B B where B.id in (select distinct id from tmp_A);
intersect
select distinct A.name, A.id from tmp_A A;

error message

Error report:
Unknown Command

Answer 1

There is a syntax error in your statement. You have an extra semicolon after the initial SELECT and before the INTERSECT.

select B.name, B.id from tmp_B B where B.id in (select distinct id from tmp_A)
intersect
select distinct A.name, A.id from tmp_A A

should be a valid SQL statement assuming that ID and NAME have the same data types in both tables.