Fixed length binary type?
I'm about to start on a database, with approximately 200 billion lines and 10 bytes of raw binary PKs I heard say that the fields of length fixed to allow more effective indexing, but I can't find a suitable type. MySQL has similar to the CHAR types BINARY and VARBINARY, and VARCHAR. Y at - it something like type BINARY in Oracle 10 g? Otherwise, any other suggestions as to what I should use?Fixed length fields are not more effective from the point of view of indexing as the fields of variable length (in versions of Oracle has published over the last 20 years, I don't vouch for earlier versions).
Oracle is not a fixed length binary type. You use variable-length RAW format.
In general, I'd be rather reluctant to have a binary value of the primary key in Oracle. At a minimum, which is going to be a pretty unique configuration. Worst case, various tools not necessarily manipulate RAW values well, so that you can experience problems down the line.
Justin
Tags: Database
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I would like to have a fixed length of 10 numbers (not more or less) entry
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If you don't want an initial value, you can use it like this:
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And, if you want to use your label separately:
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E.
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Hello
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Use the appropriate constructor:
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I need a help on the splitting of a column values for several lines by a fixed length. The value of column length is variable. I want to split by a fixed length and create a separate from that.
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============
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5 )
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---------- ---------- -----
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Note: it is not a good idea to use 'desc' as a column name, as it is a reserved, Word used to describe the table definitions.
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