How to Find Patterns in Your Data with SQL

1. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | How to Find Patterns in Your Data with SQL Chris Saxon, @ChrisRSaxon & @SQLDaily blogs.oracle.com/sql youtube.com/c/TheMagicofSQL asktom.oracle.com

2. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.

9. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1

10. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1 #1 #3 #2 #4

14. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE RN TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 1 420 1 02 Jan 2018 2 2,400 5 03 Jan 2018 3 4,932 10 06 Jan 2018 4 2,350 5 07 Jan 2018 5 410 1 10 Jan 2018 6 400 1 13 Jan 2018 7 2,300 5 14 Jan 2018 8 425 1 15 Jan 2018 9 422 1 consecutive => constant gap

15. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE RN TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 1 420 1 02 Jan 2018 2 2,400 5 03 Jan 2018 3 4,932 10 06 Jan 2018 4 2,350 5 07 Jan 2018 5 410 1 10 Jan 2018 6 400 1 13 Jan 2018 7 2,300 5 14 Jan 2018 8 425 1 15 Jan 2018 9 422 1 - - - - - - - - -

16. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE RN RUN_DATE - RN TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 1 31 Dec 2017 420 1 02 Jan 2018 2 31 Dec 2017 2,400 5 03 Jan 2018 3 31 Dec 2017 4,932 10 06 Jan 2018 4 02 Jan 2018 2,350 5 07 Jan 2018 5 02 Jan 2018 410 1 10 Jan 2018 6 04 Jan 2018 400 1 13 Jan 2018 7 06 Jan 2018 2,300 5 14 Jan 2018 8 06 Jan 2018 425 1 15 Jan 2018 9 06 Jan 2018 422 1 - - - - - - - - -

17. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE RN RUN_DATE - RN TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 1 31 Dec 2017 420 1 02 Jan 2018 2 31 Dec 2017 2,400 5 03 Jan 2018 3 31 Dec 2017 4,932 10 06 Jan 2018 4 02 Jan 2018 2,350 5 07 Jan 2018 5 02 Jan 2018 410 1 10 Jan 2018 6 04 Jan 2018 400 1 13 Jan 2018 7 06 Jan 2018 2,300 5 14 Jan 2018 8 06 Jan 2018 425 1 15 Jan 2018 9 06 Jan 2018 422 1 - - - - - - - - -

21. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | with grps as ( select run_date , run_date - row_number () over ( order by run_date ) grp from running_log r ) select min ( run_date ), count (*) from grps group by grp

23. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1 this = prev + 1

24. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1 this = prev + 1 this = prev + 3

25. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1 this = prev + 1 this = prev + 3 this ≠ prev + 1

29. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE VARIABLE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 STRT 420 1 02 Jan 2018 CONSECUTIVE 2,400 5 03 Jan 2018 CONSECUTIVE 4,932 10 06 Jan 2018 STRT 2,350 5 07 Jan 2018 CONSECUTIVE 410 1 10 Jan 2018 STRT 400 1 13 Jan 2018 STRT 2,300 5 14 Jan 2018 CONSECUTIVE 425 1 15 Jan 2018 CONSECUTIVE 422 1

32. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as start_date, count (*) as days pattern ( strt consecutive* ) define consecutive as run_date = prev ( run_date ) + 1 ); How many consecutive rows? From first row in group

40. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TRUNC(RUN_DATE, 'IW') TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 Jan 2018 420 1 02 Jan 2018 01 Jan 2018 2,400 5 03 Jan 2018 01 Jan 2018 4,932 10 06 Jan 2018 01 Jan 2018 2,350 5 07 Jan 2018 01 Jan 2018 410 1 10 Jan 2018 08 Jan 2018 400 1 13 Jan 2018 08 Jan 2018 2,300 5 14 Jan 2018 08 Jan 2018 425 1 15 Jan 2018 15 Jan 2018 422 1

45. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as start_date, count (*) as days pattern ( strt same_week* ) define same_week as trunc ( run_date, 'iw' ) = prev ( trunc ( run_date, 'iw' ) ) );

46. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as start_date, count (*) as days pattern ( strt same_week {2, } ) define same_week as trunc ( run_date, 'iw' ) = prev ( trunc ( run_date, 'iw' ) ) ); Two or more matches

47. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as start_date, count (*) as days pattern ( strt same_week {2, } ) define same_week as trunc ( run_date, 'iw' ) = prev ( trunc ( run_date, 'iw' ) ) );

48. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as start_date, count (*) as days pattern ( strt consecutive* ) define consecutive as run_date = prev ( run_date ) + 1 );

51. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | with min_three_runs as ( select * from running_log match_recognize ( order by run_date measures first ( trunc ( run_date, 'iw' ) ) as week_start, count(*) as days pattern ( strt same_week {2, } ) define same_week as trunc ( run_date, 'iw' ) = prev ( trunc ( run_date, 'iw' ) ) )

55. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | WEEK_START RN WEEK_START – RN RUNS 01 Jan 2018 1 31 Dec 2017 5 08 Jan 2018 2 06 Jan 2018 3 15 Jan 2018 3 12 Jan 2018 4 05 Feb 2018 4 01 Feb 2018 3 12 Feb 2018 5 07 Feb 2018 3 05 Mar 2018 6 28 Feb 2018 3 12 Mar 2018 7 07 Mar 2018 4

57. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | WEEK_START RN * 7 RUNS 01 Jan 2018 7 5 08 Jan 2018 14 3 15 Jan 2018 21 4 05 Feb 2018 28 3 12 Feb 2018 35 3 05 Mar 2018 42 3 12 Mar 2018 49 4

58. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | WEEK_START RN * 7 WEEK_START – ( RN * 7 ) RUNS 01 Jan 2018 7 25 Dec 2017 5 08 Jan 2018 14 25 Dec 2017 3 15 Jan 2018 21 25 Dec 2017 4 05 Feb 2018 28 08 Jan 2018 3 12 Feb 2018 35 08 Jan 2018 3 05 Mar 2018 42 22 Jan 2018 3 12 Mar 2018 49 22 Jan 2018 4

60. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by week_start measures first ( week_start ) as start_date, count (*) as weeks pattern ( strt consecutive_weeks* ) define consecutive_weeks as week_start = prev ( week_start ) + 7 );

64. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1

65. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1 #1 #2

66. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 – 07 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 08 – 14 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 15 – 21 Jan 2018 422 1

67. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 – 07 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 08 – 14 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 15 – 21 Jan 2018 422 1

68. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 – 07 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 2,350 5 07 Jan 2018 410 1 10 Jan 2018 10 – 17 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1

70. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE MN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 Jan 2018 420 1 02 Jan 2018 01 Jan 2018 2,400 5 03 Jan 2018 01 Jan 2018 4,932 10 06 Jan 2018 01 Jan 2018 2,350 5 07 Jan 2018 01 Jan 2018 410 1 10 Jan 2018 01 Jan 2018 400 1 13 Jan 2018 01 Jan 2018 2,300 5 14 Jan 2018 01 Jan 2018 425 1 15 Jan 2018 01 Jan 2018 422 1

72. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | select r.*, min ( run_date ) over ( order by run_date range between 7 preceding and current row ) mn_date from running_log r Consider rows with values in the previous 7 days

73. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE MN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 Jan 2018 420 1 02 Jan 2018 01 Jan 2018 2,400 5 03 Jan 2018 01 Jan 2018 4,932 10 06 Jan 2018 01 Jan 2018 2,350 5 07 Jan 2018 01 Jan 2018 410 1 10 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1

74. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE MN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 Jan 2018 420 1 02 Jan 2018 01 Jan 2018 2,400 5 03 Jan 2018 01 Jan 2018 4,932 10 06 Jan 2018 01 Jan 2018 2,350 5 07 Jan 2018 01 Jan 2018 410 1 10 Jan 2018 03 Jan 2018 400 1 13 Jan 2018 2,300 5 14 Jan 2018 425 1 15 Jan 2018 422 1

75. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE MN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 01 Jan 2018 420 1 02 Jan 2018 01 Jan 2018 2,400 5 03 Jan 2018 01 Jan 2018 4,932 10 06 Jan 2018 01 Jan 2018 2,350 5 07 Jan 2018 01 Jan 2018 410 1 10 Jan 2018 03 Jan 2018 400 1 13 Jan 2018 06 Jan 2018 2,300 5 14 Jan 2018 07 Jan 2018 425 1 15 Jan 2018 10 Jan 2018 422 1

79. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | with rws as ( select r.*, row_number() over ( order by run_date ) rn from running_log r ), within_7 ( run_date, time_in_s, distance_in_miles, rn, grp_start ) as ( select run_date, time_in_s, distance_in_miles, rn, run_date grp_start from rws where rn = 1

80. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | with rws as ( select r.*, row_number() over ( order by run_date ) rn from running_log r ), within_7 ( run_date, time_in_s, distance_in_miles, rn, grp_start ) as ( select run_date, time_in_s, distance_in_miles, rn, run_date grp_start from rws where rn = 1 union all select r.run_date, r.time_in_s, r.distance_in_miles, r.rn, from within_7 w join rws r on w.rn + 1 = r.rn )

81. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | with rws as ( select r.*, row_number() over ( order by run_date ) rn from running_log r ), within_7 ( run_date, time_in_s, distance_in_miles, rn, grp_start ) as ( select run_date, time_in_s, distance_in_miles, rn, run_date grp_start from rws where rn = 1 union all select r.run_date, r.time_in_s, r.distance_in_miles, r.rn, case when r.run_date < w.grp_start + 7 then grp_start else r.run_date end grp_start from within_7 w join rws r on w.rn + 1 = r.rn )

82. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | with rws as ( select r.*, row_number() over ( order by run_date ) rn from running_log r ), within_7 ( run_date, time_in_s, distance_in_miles, rn, grp_start ) as ( select run_date, time_in_s, distance_in_miles, rn, run_date grp_start from rws where rn = 1 union all select r.run_date, r.time_in_s, r.distance_in_miles, r.rn, case when r.run_date < w.grp_start + 7 then grp_start else r.run_date end grp_start from within_7 w join rws r on w.rn + 1 = r.rn ) select grp, w.* from within_7 w

84. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | select * from running_log model dimension by ( row_number() over ( order by run_date ) rn ) measures ( run_date, 1 grp, run_date grp_start ) rules ( grp_start[1] = run_date[cv()], grp_start[any] = case when run_date[cv()] < grp_start[cv()-1] + 7 then grp_start[cv() - 1] else run_date[cv()] end , grp[any] = case when run_date[cv()] < grp_start[cv()-1] + 7 then grp[cv() - 1] else nvl(grp[cv() - 1] + 1, 1) end );

89. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as start_date, count (*) as days pattern ( within7+ ) define within7 as run_date < first ( run_date ) + 7 );

94. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | select r.*, case when time_in_s < lag ( time_in_s ) over ( order by run_date ) then 'FASTER' else 'SLOWER' end faster from running_log r

99. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures classifier () as faster pattern ( slower faster* ) define faster as time_in_s < prev ( time_in_s ) );

101. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures classifier () as faster one row per match pattern ( slower faster* ) define faster as time_in_s < prev ( time_in_s ) );

102. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures classifier () as faster all rows per match pattern ( slower faster* ) define faster as time_in_s < prev ( time_in_s ) );

103. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE FASTER TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 SLOWER 420 1 02 Jan 2018 SLOWER 2,400 5 03 Jan 2018 SLOWER 4,932 10 06 Jan 2018 FASTER 2,350 5 07 Jan 2018 FASTER 410 1 10 Jan 2018 FASTER 400 1 13 Jan 2018 SLOWER 2,300 5 14 Jan 2018 FASTER 425 1 15 Jan 2018 FASTER 422 1

104. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE FASTER TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 SLOWER 420 1 02 Jan 2018 SLOWER 2,400 5 03 Jan 2018 SLOWER 4,932 10 06 Jan 2018 FASTER 2,350 5 07 Jan 2018 FASTER 410 1 10 Jan 2018 FASTER 400 1 13 Jan 2018 SLOWER 2,300 5 14 Jan 2018 FASTER 425 1 15 Jan 2018 FASTER 422 1 SLOWER!

105. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 07 Jan 2018 410 1 10 Jan 2018 400 1 14 Jan 2018 425 1 15 Jan 2018 422 1 02 Jan 2018 2,400 5 06 Jan 2018 2,350 5 13 Jan 2018 2,300 5 03 Jan 2018 4,932 10

106. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( partition by distance_in_miles order by run_date measures classifier () as faster all rows per match pattern ( slower faster* ) define faster as time_in_s < prev ( time_in_s ) );

107. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE FASTER TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 SLOWER 420 1 07 Jan 2018 FASTER 410 1 10 Jan 2018 FASTER 400 1 14 Jan 2018 SLOWER 425 1 15 Jan 2018 FASTER 422 1 02 Jan 2018 SLOWER 2,400 5 06 Jan 2018 FASTER 2,350 5 13 Jan 2018 FASTER 2,300 5 03 Jan 2018 SLOWER 4,932 10

112. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as strt , sum ( time_in_s ) as total_time, sum ( distance_in_miles ) as dist pattern ( fifty_minutes+ ) define fifty_minutes as sum ( time_in_s ) <= 3000 );

117. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | pattern ( under_fifty* over_fifty ) define under_fifty as sum ( time_in_s ) < 3000, over_fifty as sum ( time_in_s ) >= 3000 ); Includes under_fifty values

118. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as strt , sum ( time_in_s ) as total_time, sum ( distance_in_miles ) as dist pattern ( under_fifty* over_fifty ) define under_fifty as sum ( time_in_s ) < 3000, over_fifty as sum ( time_in_s ) >= 3000 );

120. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as strt , sum ( time_in_s ) as total_time, sum ( distance_in_miles ) as dist after match skip past last row pattern ( under_fifty* over_fifty ) define under_fifty as sum ( time_in_s ) < 3000, over_fifty as sum ( time_in_s ) >= 3000 );

121. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as strt , sum ( time_in_s ) as total_time, sum ( distance_in_miles ) as dist after match skip to next row pattern ( under_fifty* over_fifty ) define under_fifty as sum ( time_in_s ) < 3000, over_fifty as sum ( time_in_s ) >= 3000 );

122. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | STRT TOTAL_TIME DIST 01 Jan 2018 7,752 16 02 Jan 2018 7,332 15 03 Jan 2018 4,932 10 06 Jan 2018 3,160 7 07 Jan 2018 3,110 7 10 Jan 2018 3,125 7 13 Jan 2018 3,147 7

128. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | pattern ( five_mile one_mile {2,} ) define five_mile as distance_in_miles = 5, one_mile as distance_in_miles = 1 and run_date < first ( run_date ) + 7

129. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures first ( run_date ) as start_date, count (*) as total_runs pattern ( five_mile one_mile {2,} ) define five_mile as distance_in_miles = 5, one_mile as distance_in_miles = 1 and run_date < first ( run_date ) + 7 );

139. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | classifier => Which variable matched? match_number => Which group is this? all rows per match with unmatched rows => Show me everything!

140. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | match_recognize ( order by run_date measures classifier () as var, match_number () as grp all rows per match with unmatched rows pattern ( five_mile one_mile {2,} ) define five_mile as distance_in_miles = 5, one_mile as distance_in_miles = 1 and run_date < first ( run_date ) + 7 );

141. Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | RUN_DATE VAR GRP TIME_IN_S DISTANCE_IN_MILES 01 Jan 2018 420 1 02 Jan 2018 2,400 5 03 Jan 2018 4,932 10 06 Jan 2018 FIVE_MILE 1 2,350 5 07 Jan 2018 ONE_MILE 1 410 1 10 Jan 2018 ONE_MILE 1 400 1 13 Jan 2018 FIVE_MILE 2 2,300 5 14 Jan 2018 ONE_MILE 2 425 1 15 Jan 2018 ONE_MILE 2 422 1

How to Find Patterns in Your Data with SQL

How to Find Patterns in Your Data with SQL

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