Skip to main content
2 of 14
deleted 4 characters in body; deleted 4 characters in body
User1974
  • 1.5k
  • 25
  • 54

Select containing rows

I have a ROAD table that has a row for each vertex of each line:

+---------+--------------+-------------+
| ROAD_ID | VERTEX_INDEX | MEASURE_VAL |
+---------+--------------+-------------+
|       1 |            1 |           0 |
|       1 |            2 |         1.2 |
|       1 |            3 |         2.7 |
|       1 |            4 |         4.0 |
|       1 |            5 |         4.3 |
|       1 |            6 |         6.7 |
|       1 |            7 |         7.1 |
+---------+--------------+-------------+
|       2 |            1 |           0 |
|       2 |            2 |         5.2 |
|       2 |            3 |         7.7 |
|       2 |            4 |         9.6 |
|       2 |            5 |        11.8 |
+---------+--------------+-------------+
|       3 |            1 |           0 |
|       3 |            2 |         2.4 |
|       3 |            3 |         4.9 |
+---------+--------------+-------------+

And an EVENT table with rows that pertain to portions of roads:

+----------+---------+--------------+------------+
| EVENT_ID | ROAD_ID | FROM_MEASURE | TO_MEASURE |
+----------+---------+--------------+------------+
|       01 |       1 |          2.8 |        5.9 |
|       02 |       2 |          3.0 |        5.6 |
|       03 |       3 |            0 |        2.8 |
+----------+---------+--------------+------------+

I want to select the vertices/rows from ROAD where the MEASURE_VAL contains the event FROM_MEASURE and TO_MEASURE (including the vertices in between):

+---------+--------------+-------------+
| ROAD_ID | VERTEX_INDEX | MEASURE_VAL |
+---------+--------------+-------------+
|       1 |            3 |         2.7 |
|       1 |            4 |         4.0 |
|       1 |            5 |         4.3 |
|       1 |            6 |         6.7 |
+---------+--------------+-------------+
|       2 |            1 |           0 |
|       2 |            2 |         5.2 |
|       2 |            3 |         7.7 |
+---------+--------------+-------------+
|       3 |            1 |           0 |
|       3 |            2 |         2.4 |
|       3 |            3 |         4.9 |
+---------+--------------+-------------+

It's kind of like I want to select vertices/rows from ROADS where the MEASURE_VAL is between the event FROM_MEASURE and TO_MEASURE, plus one vertex/row in both directions (where applicable).

How can I do this?

User1974
  • 1.5k
  • 25
  • 54