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Proper Use of Indexes
Actually, i join on two columns (sorry i didnt mention that) and i have one index for both cols (the index is on col3,col4 on both tables). I havent created one index per column. Do you think i need one index per column instead of a combined one? The query is: update table1 a set (a.col1 ...- fotistso
- Post #3
- Forum: Oracle: All versions
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Proper Use of Indexes
Hello, I have two tables that are quite big. The first one has 1 million rows and the second around 2 million. My problem is that when i update oracle ignores the index that i have created. My query is like: update table1 a set (a.col1 , a.col2) = (select b.col1, b.col2 from table2 b...- fotistso
- Thread
- Replies: 3
- Forum: Oracle: All versions
