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唉。本来一个简单的问题,居然搞得无比复杂。本来想把SYBASE手册上的内容贴出来,结果却发现ASE12.5.1/12.5.2的手册(英文版)居然犯了极大的错误。中文版的COPY出来是乱码,就不贴了。
bcp in works in one of two modes:
• Fast bcp – logs each row insert that it makes, used for tables that have one
or more indexes or triggers.
• Slow bcp – logs only page allocations, copying data into tables without
indexes or triggers at the fastest speed possible.
The existence of indexes and triggers on tables affects transfer speed. When
you use bcp on such tables, bcp automatically uses its slow mode, which logs
data inserts in the transaction log. These logged inserts can cause the
transaction log to become very large. |
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