Create Index
语句格式:
CREATE [UNIQUE] [ASC | DESC] INDEX index_reference ON table_reference (column_reference [,column_reference...])
Borland原话:
Use the CREATE INDEX statement to create a secondary index for an existing table. Index names may not have embedded spaces. Paradox indexes may be based on multiple columns. Due to the distinctive nature of dBASE expression indexes, only single-column indexes can be created with CREATE INDEX.
