I don't believe you can add a column anywhere but at the end of the table once the table is created. One solution might be to try this: CREATE ... ... <看更多>
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I don't believe you can add a column anywhere but at the end of the table once the table is created. One solution might be to try this: CREATE ... ... <看更多>
It hangs about 2 hours and I abort it. I found the reason is some other sessions lock this table. After I killed the sessions, It completes adding column in ... ... <看更多>
... <看更多>