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NO_AUTO_VALUE_ON_ZERO mode
The fixes for these bugs:
Bug#27586 Wrong autoinc value assigned by LOAD DATA in the NO_AUTO_VALUE_ON_ZERO mode
Bug#22372 Disable spatial key, load data, enable spatial key, crashes table
fixed only LOAD DATA INFILE, but did not fix LOAD XML INFILE.
This patch does for LOAD XML FILE what patches for Bug#27586 and Bug#22372
earlier did for LOAD DATA INFILE.
1. Fixing the auto_increment problem:
a. table->auto_increment_field_not_null is not set to TRUE
anymore when a column does not have a corresponding XML tag.
b. Adding "table->auto_increment_field_not_null= false"
in the end of read_xml_field().
These two changes resemble the patch for Bug#27586.
2. Fixing the GEOMETRY problem:
The result for "reset()" was not tested for errors in read_xml_field(),
which made it possible for empty string to sneak into a "GEOMETRY NOT NULL"
column when this column does not have a corresponding XML tag with data.
After this patch the result of reset() is tested and and an error is
returned in such cases.
This change effectively resembles the patch for Bug#22372
3. Spliting the code into a new virtual method Field::load_data_set_null().
Rationale:
a. To avoid duplicate code in read_sep_field() and read_xml_field():
Changes #1 and #2 made the code handling NULL values for Field
exactly the same in read_sep_field() and read_xml_field().
b. To avoid tests for field_type(), which is not friendly to
upcoming data type plugins.
This change makes it possible for data type plugins
to implement their own special way for handling NULL values in LOAD DATA
by overriding Field_xxx::load_data_set_null(),
like Field_geom and Field_timestamp do.
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extend the fix from 5.5 (in read_sep_field()) to apply to read_xml_field()
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DESCRIPTION
===========
Inability of mysql LOAD XML command to handle empty XML
tags i.e. <row><tag/></row>. Also the behaviour is wrong
and (different than above) when there is a space in empty
tag i.e. <row><tag /></row>
ANALYSIS
========
In read_xml() the case where we encounter a close tag ('/')
we're decreasing the 'level' blindly which is wrong.
Actually when its an without-space-empty-tag (succeeding
char is '>'), we need to skip the decrement. In other words
whenever we hit a close tag ('/'), decrease the 'level'
only when (i) It's not an (without space) empty tag i.e.
<tag/> or, (ii) It is of format <row col="val" .../>
FIX
===
The switch case for '/' is modified. We've removed the
blind decrement of 'level'. We do it only when its not an
without-space-empty-tag. Also we are setting 'in_tag' to
false to let program know that we're done reading current
tag (required in the case of format <row col="val" .../>)
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Problem:
item->name was NULL for Item_user_var_as_out_param
which made strcmp(something, item->name) crash in the LOAD XML code.
Fix:
- item_func.h: Adding set_name() in constuctor for Item_user_var_as_out_param
- sql_load.cc: Changing the condition in write_execute_load_query_log_event() which
distiguished between Item_user_var_as_out_param and Item_field
from
if (item->name == NULL)
to
if (item->type() == Item::FIELD_ITEM)
- loadxml.result, loadxml.test: adding tests
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the trace file
when EXTRA_DEBUG is enabled. The reason for the error message is that a query
was issued with send, but response was not read with reap.
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.\sql_error.cc, line 8
The additional patch. That 'loadxml.test' failure was actually about our testing system,
not the code.
Firstly we need a new mysqltest command, wich i called 'send_eval'. So the expression
can be evaluated, then started in a parallel thread. We only have separane 'send' and
'eval' commands at the moment.
Then we need to add the waiting code after the 'KILL' to our test, so the thread will be killed
before the test goes further. The present 'reap' command doesn't handle the killed threads
well.
per-file comments:
client/mysqltest.cc
Bug#42520 killing load .. infile Assertion failed: ! is_set(), file .\sql_error.cc, line 8
The 'send_eval' command implemented.
mysql-test/r/loadxml.result
Bug#42520 killing load .. infile Assertion failed: ! is_set(), file .\sql_error.cc, line 8
test result updated.
mysql-test/t/loadxml.test
Bug#42520 killing load .. infile Assertion failed: ! is_set(), file .\sql_error.cc, line 8
test case added.
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mysql-test/r/loadxml.result
mysql-test/t/loadxml.test
Fixing non-deterministic test results
sql/sql_yacc.yy
Initializing fname_first using get_tok_end() instead of get_ptr().
The latter is grammar-dependant. The former is not.
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