Horton

Re: XML/XPath issues: text/CDATA in XMLTABLE, XPath evaluated with wrong context

Ramanarayana <raam.soft@gmail.com>

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From: Ramanarayana <raam.soft@gmail.com>
To: Markus Winand <markus.winand@winand.at>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Pavel Stehule <pavel.stehule@gmail.com>, Alvaro Herrera <alvherre@2ndquadrant.com>
Date: 2019-02-28T08:58:30Z
Lists: pgsql-hackers 
>
> Hi,

        I have tested the three issues fixed in patch 001. Array Indexes
issue is still there.Running the following query returns ERROR: more than
one value returned by column XPath expression

SELECT xmltable.*
FROM (SELECT data FROM xmldata) x,
LATERAL XMLTABLE('/ROWS/ROW'
PASSING data
COLUMNS
country_name text PATH 'COUNTRY_NAME/text()' NOT NULL,
size_text float PATH 'SIZE/text()',
size_text_1 float PATH 'SIZE/text()[1]',
size_text_2 float PATH 'SIZE/text()[2]',
"SIZE" float, size_xml xml PATH 'SIZE')

The other two issues are resolved by this patch.


-- 
Cheers
Ram 4.0

Commits

  1. Remove EState.es_range_table_array.

  2. Rationalize use of list_concat + list_copy combinations.

  3. Cosmetic improvements in setup of planner's per-RTE arrays.

  4. Make better use of the new List implementation in a couple of places

  5. Fix sepgsql test results for commit d97b714a2.

  6. Avoid using lcons and list_delete_first where it's easy to do so.

  7. Remove lappend_cell...() family of List functions.

  8. Clean up some ad-hoc code for sorting and de-duplicating Lists.

  9. Redesign the API for list sorting (list_qsort becomes list_sort).

  10. Remove dead code.

  11. Represent Lists as expansible arrays, not chains of cons-cells.

  12. Standardize some more loops that chase down parallel lists.

  13. Reimplement the linked list data structure used throughout the backend.