OCA Oracle Database SQL Exam Guide (Exam 1Z0-071) (Oracle Press) by O'Hearn Steve
Author:O'Hearn, Steve [O'Hearn, Steve]
Language: eng
Format: azw3
Publisher: McGraw-Hill Education
Published: 2017-08-25T04:00:00+00:00
In the example, the values returned by RANK are in the column SQ_FT_RK. The rows are partitioned by ROOM_STYLE, so those are sorted first; then within a given partition, rows are ranked by SQ_FT. Note line 14, which is the start of a new ROOM_STYLE, and the RANK value restarts at 1. Also note that the next line, line 15, has the same value for SQ_FT, so the ranking is tied at 1. Next, line 16 is ranked 3 since this is the third row of 'Suite' ROOM_STYLES, and the SQ_FT of 586 is not tied with any other row.
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