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07.24.2008 at 03:46AM PDT, ID: 23591593
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9.0

Recursive Sql - date ranges between tables

Asked by tonMachine100 in SQL Query Syntax, PL / SQL

Tags: ,

The problem is associated with the merging of date ranges that exist in two tables, Episodes and Plans. The solution needs to produce a full merge of overlapping ranges for these dates (by client).

The attachment shows, fig 1 the two sample tables used, fig 2. the desired output. The second tab on the spreadsheet shows the create and populate statements for the sample data.

Each client may have a number of plans or episodes. The date ranges of a clients plans will not overlap, nor will the date ranges of a clients episodes. It is possible however for the dates of a clients plans and episodes to overlap.

The tables are linked by the plan_client and epi_client field. Where there is no end date in the plan or episode, this indicates that the plan is still open.

Please see a previous question Ive asked which is related to this - 'Compare date ranges between tables cont.'.  In this question, an expert suggested that it maybe possible to do this using recursive sql and provided some useful information regarding how this report could be structured.

thanks
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date range sample 4
 
[+][-]07.24.2008 at 04:17AM PDT, ID: 22077817

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[+][-]07.24.2008 at 07:14AM PDT, ID: 22079324

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[+][-]07.24.2008 at 10:11AM PDT, ID: 22081322

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[+][-]07.24.2008 at 10:37AM PDT, ID: 22081576

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[+][-]07.24.2008 at 11:18AM PDT, ID: 22081956

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[+][-]07.24.2008 at 11:27AM PDT, ID: 22082056

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[+][-]07.24.2008 at 12:14PM PDT, ID: 22082518

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[+][-]07.24.2008 at 12:35PM PDT, ID: 22082714

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About this solution

Zones: SQL Query Syntax, PL / SQL
Tags: SQL, oracle 9
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Solution Provided By: DrSQL
Participating Experts: 2
Solution Grade: A
 
 
 
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