kovjanos commented on PR #3214:
URL: https://github.com/apache/hive/pull/3214#issuecomment-1100758580
That doesn't work with Oracle, even plain table has uniqueness issues - see
below. Do we need to have this also on ORACLE? I can add the column to keep
schema consistent, but it can't be a PRIMARY KEY (might not even be required
for the DELETEs in Oracle if it works differently).
One solution might be the old-school solution: a sequence and trigger behind
the increment column. I'll give it a try..
```
CREATE TABLE TEST_TABLE (
ID number(19) NOT NULL,
DB varchar(10) NOT NULL,
PKEY NUMBER(19) GENERATED ALWAYS AS IDENTITY
) ROWDEPENDENCIES;
INSERT ALL
INTO TEST_TABLE (ID, DB) VALUES (1,'1-db')
INTO TEST_TABLE (ID, DB) VALUES (2,'2-db')
INTO TEST_TABLE (ID, DB) VALUES (3,'3-db')
SELECT 1 FROM DUAL;
SELECT * FROM TEST_TABLE;
ID DB PKEY
---- ---------- ----
1 1-db 1
2 2-db 1
3 3-db 1
```
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