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Bug #24595937: INCORRECT BEHAVIOR WHEN LOADING DATA TO VIEW

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Issue:
------
While using the LOAD statement to insert data into an
updateable view, the check to verify whether a column
is actually updatable is missing.

Solution for 5.5 and 5.6:
-------------------------
For a view whose column-list in specified in the LOAD
command, this check is not performed. This fix adds the
check.

This is a partial backport of Bug#21097485.

Solution for 5.7 and trunk:
---------------------------
For a view whose column-list is specified in the LOAD
command, this check is already performed. This fix adds the
same check when no column-list is specified.
This commit is contained in:
Sreeharsha Ramanavarapu 2016-12-13 16:41:05 +05:30
parent d8a7b4d37b
commit 30a59a8d78
3 changed files with 20 additions and 2 deletions
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2
mysql-test/r/loaddata.result
View File

@ -316,7 +316,7 @@ FIELDS ESCAPED BY '\\'
TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n' (c0, c2);
ERROR HY000: Invalid column reference (v2.c0) in LOAD DATA
ERROR HY000: Column 'c0' is not updatable
LOAD DATA INFILE '../../std_data/bug35469.dat' INTO TABLE v3
FIELDS ESCAPED BY '\\'

2
mysql-test/t/loaddata.test
View File

@ -292,7 +292,7 @@ SELECT * FROM v2;
DELETE FROM t1;
--echo
--error ER_LOAD_DATA_INVALID_COLUMN
--error ER_NONUPDATEABLE_COLUMN
LOAD DATA INFILE '../../std_data/bug35469.dat' INTO TABLE v2
FIELDS ESCAPED BY '\\'
TERMINATED BY ','

18
sql/sql_load.cc
View File

@ -296,6 +296,24 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
setup_fields(thd, 0, set_fields, MARK_COLUMNS_WRITE, 0, 0) ||
check_that_all_fields_are_given_values(thd, table, table_list))
DBUG_RETURN(TRUE);
/*
Special updatability test is needed because fields_vars may contain
a mix of column references and user variables.
*/
Item *item;
List_iterator<Item> it(fields_vars);
while ((item= it++))
{
if ((item->type() == Item::FIELD_ITEM ||
item->type() == Item::REF_ITEM) &&
item->filed_for_view_update() == NULL)
{
my_error(ER_NONUPDATEABLE_COLUMN, MYF(0), item->name);
DBUG_RETURN(true);
}
}
/*
Check whenever TIMESTAMP field with auto-set feature specified
explicitly.