SQL (table transposition)
| От | Dana.Reed@clinicaldatacare.com |
|---|---|
| Тема | SQL (table transposition) |
| Дата | |
| Msg-id | TFSUYCTU@clinicaldatacare.com обсуждение исходный текст |
| Список | pgsql-sql |
Is there any way to get table T3 (below) from T1 and T2 using SQL (select, view, etc)? T3 is basically all INDEX values from T1 matched to IND from T2 with the corresponding KEY/VALUE pairs transposed from rowsto columns. ------- |INDEX| (T1) ------- | 1 | | 2 | | 3 | ------- ----------------- |IND|KEY| VALUE | (T2) ----------------- | 1 | 1 | val_a | | 1 | 2 | val_b | | 1 | 3 | val_c | | 2 | 1 | val_d | | 2 | 2 | val_e | | 3 | 1 | val_f | | 3 | 3 | val_g | ----------------- ---------------------------------- |T1_INDEX|KEY1VAL|KEY2VAL|KEY3VAL| (T3) ---------------------------------- | 1 | val_a | val_b | val_c | | 2 | val_d | val_e | | | 3 | val_f | | val_g | ---------------------------------- Thanks for any suggestions med vänlig hälsning /Dana
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