What is the maximum number of columns allowed in a table?

问题

What is the maximum number of columns allowed in an Oracle table, in the following versions?

• Oracle 8i
• Oracle 9i
• Oracle 10g
• Oracle 11g
• Oracle 12c

回答1:

A limit of 1,000 columns per table applies for versions 8i, 9i, 10g, 11g, 12c, 18c and 19c.

Prior to that, Oracle 7 had a 254 column limit.

回答2:

for Oracle 11g :

1000 Columns per table

32 columns per index

Logical Database Limits:

https://docs.oracle.com/cd/B28359_01/server.111/b28320/limits003.htm#i288032

回答3:

For version 11g,10g,9i and 8i column size:-

Per table:1000 columns maximum

Per index (or clustered index):32 columns maximum

Per bitmapped index:30 columns maximum

来源：https://stackoverflow.com/questions/14722883/what-is-the-maximum-number-of-columns-allowed-in-a-table