Re: comparing 2 tables
От | Richard Huxton |
---|---|
Тема | Re: comparing 2 tables |
Дата | |
Msg-id | 4236B06C.3050601@archonet.com обсуждение исходный текст |
Ответ на | comparing 2 tables (U K Laxmi <laxmiuk@yahoo.com>) |
Список | pgsql-sql |
U K Laxmi wrote: > I've two Ms Access tables with the same structure. This is a PostgreSQL list - you'd probably be better using a Microsoft-Access list. [snip] > Here what we should observe is, 1st row in table 1 not > present in table2. 2nd row in table1 is modified in > table2. 3rd row in table 2 is not present in table1. > So, after comparing table 1 and table2, the > differences are captured as old and new. Old referes > to table1 data and new referes to table2 data. The > rows that are equal in both table 1 and table 2 should > not be captured in table 3. > > Is itpossible to do this in Ms Access? If so, how. In general terms, with MS-Access, I'd build separate queries for each step. So you'd want a query for: 1. Reset table3 2. Insert to table3 rows in table1 and not in table2 3. Insert to table3 rows in table2 and not in table1 ...etc... HTH -- Richard Huxton Archonet Ltd
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