OpenText Analytics Database 26.2.x – MATCH clause functions

Sql-Reference: EVENT_NAME

Mon, 01 Jan 0001 00:00:00 +0000

Returns a VARCHAR value representing the name of the event that matched the row.

Syntax

EVENT_NAME()

Notes

Pattern matching functions must be used in MATCH clause syntax; for example, if you call EVENT_NAME() on its own, OpenText™ Analytics Database returns the following error message:

=> SELECT event_name();
ERROR:  query with pattern matching function event_name must include a MATCH clause

Examples

Note

This example uses the schema defined in Event series pattern matching.

The following statement analyzes users' browsing history on website2.com and identifies patterns where the user landed on website2.com from another Web site (Entry) and browsed to any number of other pages (Onsite) before making a purchase (Purchase). The query also outputs the values for EVENT_NAME(), which is the name of the event that matched the row.

SELECT uid,
       sid,
       ts,
       refurl,
       pageurl,
       action,
       event_name()
FROM clickstream_log
MATCH
  (PARTITION BY uid, sid ORDER BY ts
   DEFINE
     Entry    AS RefURL  NOT ILIKE '%website2.com%' AND PageURL ILIKE '%website2.com%',
     Onsite   AS PageURL ILIKE     '%website2.com%' AND Action='V',
     Purchase AS PageURL ILIKE     '%website2.com%' AND Action = 'P'
   PATTERN
     P AS (Entry Onsite* Purchase)
   ROWS MATCH FIRST EVENT);
 uid | sid |    ts    |        refurl        |       pageurl        | action | event_name
-----+-----+----------+----------------------+----------------------+--------+------------
   1 | 100 | 12:00:00 | website1.com         | website2.com/home    | V      | Entry
   1 | 100 | 12:01:00 | website2.com/home    | website2.com/floby   | V      | Onsite
   1 | 100 | 12:02:00 | website2.com/floby   | website2.com/shamwow | V      | Onsite
   1 | 100 | 12:03:00 | website2.com/shamwow | website2.com/buy     | P      | Purchase
   2 | 100 | 12:10:00 | website1.com         | website2.com/home    | V      | Entry
   2 | 100 | 12:11:00 | website2.com/home    | website2.com/forks   | V      | Onsite
   2 | 100 | 12:13:00 | website2.com/forks   | website2.com/buy     | P      | Purchase
(7 rows)

Sql-Reference: MATCH_ID

Mon, 01 Jan 0001 00:00:00 +0000

Returns a successful pattern match as an INTEGER value. The returned value is the ordinal position of a match within a partition.

Syntax

MATCH_ID()

Notes

Pattern matching functions must be used in MATCH clause syntax; for example, if you call MATCH_ID() on its own, OpenText™ Analytics Database returns the following error message:

=> SELECT match_id();
ERROR:  query with pattern matching function match_id must include a MATCH clause

Examples

Note

This example uses the schema defined in Event series pattern matching.

The following statement analyzes users' browsing history on a site called website2.com and identifies patterns where the user reached website2.com from another Web site (Entry in the MATCH clause) and browsed to any number of other pages (Onsite) before making a purchase (Purchase). The query also outputs values for the MATCH_ID(), which represents a sequential number of the match.

SELECT uid,
       sid,
       ts,
       refurl,
       pageurl,
       action,
       match_id()
FROM clickstream_log
MATCH
  (PARTITION BY uid, sid ORDER BY ts
   DEFINE
     Entry    AS RefURL  NOT ILIKE '%website2.com%' AND PageURL ILIKE '%website2.com%',
     Onsite   AS PageURL ILIKE     '%website2.com%' AND Action='V',
     Purchase AS PageURL ILIKE     '%website2.com%' AND Action = 'P'
   PATTERN
     P AS (Entry Onsite* Purchase)
   ROWS MATCH FIRST EVENT);

uid | sid |    ts    |        refurl        |       pageurl        | action | match_id
----+-----+----------+----------------------+----------------------+--------+------------
1   | 100 | 12:00:00 | website1.com         | website2.com/home    | V      |          1
1   | 100 | 12:01:00 | website2.com/home    | website2.com/floby   | V      |          2
1   | 100 | 12:02:00 | website2.com/floby   | website2.com/shamwow | V      |          3
1   | 100 | 12:03:00 | website2.com/shamwow | website2.com/buy     | P      |          4
2   | 100 | 12:10:00 | website1.com         | website2.com/home    | V      |          1
2   | 100 | 12:11:00 | website2.com/home    | website2.com/forks   | V      |          2
2   | 100 | 12:13:00 | website2.com/forks   | website2.com/buy     | P      |          3
(7 rows)

Sql-Reference: PATTERN_ID

Mon, 01 Jan 0001 00:00:00 +0000

Returns an integer value that is a partition-wide unique identifier for the instance of the pattern that matched.

Syntax

PATTERN_ID()

Notes

Pattern matching functions must be used in MATCH clause syntax; for example, if call PATTERN_ID() on its own, OpenText™ Analytics Database returns the following error message:

=> SELECT pattern_id();
ERROR:  query with pattern matching function pattern_id must include a MATCH clause

Examples

Note

This example uses the schema defined in Event series pattern matching.

The following statement analyzes users' browsing history on website2.com and identifies patterns where the user landed on website2.com from another Web site (Entry) and browsed to any number of other pages (Onsite) before making a purchase (Purchase). The query also outputs values for PATTERN_ID(), which represents the partition-wide identifier for the instance of the pattern that matched.

SELECT uid,
       sid,
       ts,
       refurl,
       pageurl,
       action,
       pattern_id()
FROM clickstream_log
MATCH
  (PARTITION BY uid, sid ORDER BY ts
   DEFINE
     Entry    AS RefURL  NOT ILIKE '%website2.com%' AND PageURL ILIKE '%website2.com%',
     Onsite   AS PageURL ILIKE     '%website2.com%' AND Action='V',
     Purchase AS PageURL ILIKE     '%website2.com%' AND Action = 'P'
   PATTERN
     P AS (Entry Onsite* Purchase)
   ROWS MATCH FIRST EVENT);


uid | sid |    ts    |        refurl        |       pageurl        | action | pattern_id
----+-----+----------+----------------------+----------------------+--------+------------
1   | 100 | 12:00:00 | website1.com         | website2.com/home    | V      |          1
1   | 100 | 12:01:00 | website2.com/home    | website2.com/floby   | V      |          1
1   | 100 | 12:02:00 | website2.com/floby   | website2.com/shamwow | V      |          1
1   | 100 | 12:03:00 | website2.com/shamwow | website2.com/buy     | P      |          1
2   | 100 | 12:10:00 | website1.com         | website2.com/home    | V      |          1
2   | 100 | 12:11:00 | website2.com/home    | website2.com/forks   | V      |          1
2   | 100 | 12:13:00 | website2.com/forks   | website2.com/buy     | P      |          1
(7 rows)

OpenText Analytics Database 26.2.x – MATCH clause functions

Sql-Reference: EVENT_NAME

Syntax

Notes

Examples

Note

See also

Sql-Reference: MATCH_ID

Syntax

Notes

Examples

Note

See also

Sql-Reference: PATTERN_ID

Syntax

Notes

Examples

Note

See also