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ChangeSet
1.1995 05/08/17 13:46:36 timour@stripped +1 -0
WL#2486 - Process NATURAL and USING joins according to SQL:2003
- Applied Monty's patch after his review of sql_base.cc
sql/sql_base.cc
1.282 05/08/17 13:46:33 timour@stripped +157 -142
Applied Monty's patch after his review of WL#2486.
# This is a BitKeeper patch. What follows are the unified diffs for the
# set of deltas contained in the patch. The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User: timour
# Host: lamia.home
# Root: /home/timka/mysql/src/5.0-2486
--- 1.281/sql/sql_base.cc 2005-08-12 23:56:13 +03:00
+++ 1.282/sql/sql_base.cc 2005-08-17 13:46:33 +03:00
@@ -2600,30 +2600,35 @@
NATURAL/USING joins
RETURN
- - Pointer to the found Field
- - NULL if the field was not found
- - WRONG_GRANT if no access rights to the found field
+ NULL if the field was not found
+ WRONG_GRANT if no access rights to the found field
+ # Pointer to the found Field
*/
static Field *
find_field_in_natural_join(THD *thd, TABLE_LIST *table_ref, const char *name,
const char *table_name, const char *db_name,
uint length, Item **ref, bool check_grants,
- bool register_tree_change, TABLE_LIST **actual_table)
+ bool register_tree_change,
+ TABLE_LIST **actual_table)
{
+ List_iterator_fast<Natural_join_column>
+ field_it(*(table_ref->join_columns));
+ Natural_join_column *nj_col;
+ Field *found_field;
DBUG_ENTER("find_field_in_natural_join");
- DBUG_PRINT("enter", ("natural join, field name: '%s', ref 0x%lx",
+ DBUG_PRINT("enter", ("field name: '%s', ref 0x%lx",
name, (ulong) ref));
DBUG_ASSERT(table_ref->is_natural_join && table_ref->join_columns);
- List_iterator_fast<Natural_join_column>
- field_it(*(table_ref->join_columns));
- Natural_join_column *nj_col= NULL;
- Field *found_field= NULL;
+ DBUG_ASSERT(*actual_table == NULL);
- *actual_table= NULL;
+ LINT_INIT(found_field);
- while ((nj_col= field_it++))
+ for (;;)
{
+ if (!(nj_col= field_it++))
+ DBUG_RETURN(NULL);
+
if (table_name)
{
/*
@@ -2640,7 +2645,7 @@
if (db_name && db_name[0])
{
const char *cur_db_name= nj_col->db_name();
- if (cur_db_name && cur_db_name && strcmp(db_name, cur_db_name))
+ if (cur_db_name && strcmp(db_name, cur_db_name))
continue;
}
}
@@ -2649,9 +2654,6 @@
break;
}
- if (!nj_col)
- DBUG_RETURN(NULL);
-
#ifndef NO_EMBEDDED_ACCESS_CHECKS
if (check_grants && nj_col->check_grants(thd, name, length))
DBUG_RETURN(WRONG_GRANT);
@@ -2668,13 +2670,14 @@
DBUG_RETURN(NULL);
DBUG_ASSERT(nj_col->table_field == NULL);
if (nj_col->table_ref->schema_table_reformed)
+ {
/*
Translation table items are always Item_fields and fixed
already('mysql_schema_table' function). So we can return
->field. It is used only for 'show & where' commands.
*/
DBUG_RETURN(((Item_field*) (nj_col->view_field->item))->field);
-
+ }
if (register_tree_change)
thd->change_item_tree(ref, item);
else
@@ -2710,8 +2713,8 @@
lookup for fields in prepared tables)
RETURN
- 0 field is not found
- # pointer to field
+ 0 field is not found
+ # pointer to field
*/
Field *
@@ -2719,10 +2722,10 @@
bool check_grants, bool allow_rowid,
uint *cached_field_index_ptr)
{
- DBUG_ENTER("find_field_in_table");
- DBUG_PRINT("enter", ("table: '%s', field name: '%s'", table->alias, name));
Field **field_ptr, *field;
uint cached_field_index= *cached_field_index_ptr;
+ DBUG_ENTER("find_field_in_table");
+ DBUG_PRINT("enter", ("table: '%s', field name: '%s'", table->alias, name));
/* We assume here that table->field < NO_CACHED_FIELD_INDEX = UINT_MAX */
if (cached_field_index < table->s->fields &&
@@ -2760,7 +2763,7 @@
if (check_grants && check_grant_column(thd, &table->grant,
table->s->db,
table->s->table_name, name, length))
- DBUG_RETURN(WRONG_GRANT);
+ field= WRONG_GRANT;
#endif
DBUG_RETURN(field);
}
@@ -2819,22 +2822,23 @@
simply compare the qualifying table and database names with the ones of
'table_list' because each field in such a join may originate from a
different table.
- TODO: Ensure that db and tables->db always points to something !
+ TODO: Ensure that table_name, db_name and tables->db always points to
+ something !
*/
if (!table_list->is_natural_join &&
- (table_name && table_name[0] &&
- my_strcasecmp(table_alias_charset, table_list->alias, table_name) ||
+ table_name && table_name[0] &&
+ (my_strcasecmp(table_alias_charset, table_list->alias, table_name) ||
(db_name && db_name[0] && table_list->db && table_list->db[0] &&
strcmp(db_name, table_list->db))))
DBUG_RETURN(0);
+ *actual_table= NULL;
if (table_list->field_translation)
{
if ((fld= find_field_in_view(thd, table_list, name, item_name, length,
- ref, check_grants_view, register_tree_change)))
+ ref, check_grants_view,
+ register_tree_change)))
*actual_table= table_list;
- else
- *actual_table= NULL;
}
else if (table_list->is_natural_join)
fld= find_field_in_natural_join(thd, table_list, name, table_name,
@@ -2848,8 +2852,6 @@
check_grants_table, allow_rowid,
cached_field_index_ptr)))
*actual_table= table_list;
- else
- *actual_table= NULL;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
/* check for views with temporary table algorithm */
if (check_grants_view && table_list->view &&
@@ -2858,7 +2860,7 @@
table_list->view_db.str,
table_list->view_name.str,
name, length))
- DBUG_RETURN(WRONG_GRANT);
+ fld= WRONG_GRANT;
#endif
}
@@ -2982,18 +2984,15 @@
db= name_buff;
}
+ if (last_table)
+ last_table= last_table->next_name_resolution_table;
+
/* The field we search for is qualified with a table name and optional db. */
if (table_name && table_name[0])
{
- bool found_table=0;
- for ( ;
- (cur_table &&
- (last_table ?
- (cur_table != last_table->next_name_resolution_table) : TRUE));
+ for (; cur_table != last_table ;
cur_table= cur_table->next_name_resolution_table)
{
- DBUG_ASSERT(cur_table);
- found_table= 1;
Field *cur_field= find_field_in_table_ref(thd, cur_table, name,
item->name, table_name,
db, length, ref,
@@ -3002,8 +3001,8 @@
want_privilege) &&
check_privileges),
(test(cur_table->grant.
- want_privilege)
- && check_privileges),
+ want_privilege) &&
+ check_privileges),
1, &(item->cached_field_index),
register_tree_change,
&actual_table);
@@ -3032,8 +3031,12 @@
}
if (found)
return found;
- if (!found_table && (report_error == REPORT_ALL_ERRORS ||
- report_error == REPORT_EXCEPT_NON_UNIQUE))
+ /*
+ If there were no tables to search, we wouldn't go through the loop and
+ cur_table wouldn't be updated by the loop increment part.
+ */
+ if (cur_table == first_table && (report_error == REPORT_ALL_ERRORS ||
+ report_error == REPORT_EXCEPT_NON_UNIQUE))
{
char buff[NAME_LEN*2+1];
if (db && db[0])
@@ -3054,13 +3057,9 @@
/* The field we search for is not qualified. */
allow_rowid= cur_table && !cur_table->next_local;
- for ( ;
- (cur_table &&
- (last_table ?
- (cur_table != last_table->next_name_resolution_table) : TRUE));
- cur_table= cur_table->next_name_resolution_table)
+ for (; cur_table != last_table ;
+ cur_table= cur_table->next_name_resolution_table)
{
- DBUG_ASSERT(cur_table);
Field *cur_field= find_field_in_table_ref(thd, cur_table, name, item->name,
NULL, NULL, length, ref,
(cur_table->table &&
@@ -3359,20 +3358,21 @@
is resolved only the supplied 'table_ref'.
RETURN
- FALSE - if all OK
- TRUE - otherwise
+ FALSE if all OK
+ TRUE otherwise
*/
static bool
set_new_item_local_context(THD *thd, Item_ident *item, TABLE_LIST *table_ref)
{
Name_resolution_context *context;
+
if (!(context= (Name_resolution_context*)
thd->calloc(sizeof(Name_resolution_context))))
return TRUE;
context->init();
- context->first_name_resolution_table= table_ref;
- context->last_name_resolution_table= table_ref;
+ context->first_name_resolution_table=
+ context->last_name_resolution_table= table_ref;
item->context= context;
return FALSE;
}
@@ -3405,8 +3405,8 @@
called for the previous level of NATURAL/USING joins.
RETURN
- TRUE - if error when some common column is non-unique, or out of memory
- FALSE - if OK
+ TRUE error when some common column is non-unique, or out of memory
+ FALSE OK
*/
static bool
@@ -3415,16 +3415,16 @@
{
Field_iterator_table_ref it_1, it_2;
Natural_join_column *nj_col_1, *nj_col_2;
- const char *field_name_1, *field_name_2;
- *found_using_fields= 0;
- bool add_columns= TRUE;
+ const char *field_name_1;
Query_arena *arena, backup;
+ bool add_columns= TRUE;
bool result= TRUE;
DBUG_ENTER("mark_common_columns");
- DBUG_PRINT("info", ("operand_1: %s, operand_2: %s",
+ DBUG_PRINT("info", ("operand_1: %s operand_2: %s",
table_ref_1->alias, table_ref_2->alias));
+ *found_using_fields= 0;
arena= thd->change_arena_if_needed(&backup);
/*
@@ -3447,25 +3447,31 @@
for (it_1.set(table_ref_1); !it_1.end_of_fields(); it_1.next())
{
bool is_created_1;
+ bool found= FALSE;
if (!(nj_col_1= it_1.get_or_create_column_ref(thd, &is_created_1)))
goto err;
field_name_1= nj_col_1->name();
- bool found= FALSE;
/* If nj_col_1 was just created add it to the list of join columns. */
if (is_created_1)
table_ref_1->join_columns->push_back(nj_col_1);
- /* Find a field with the same name in table_ref_2. */
+ /*
+ Find a field with the same name in table_ref_2.
+
+ Note that for the second loop, it_2.set() will iterate over
+ table_ref_2->join_columns and not generate any new elements or
+ lists.
+ */
nj_col_2= NULL;
- field_name_2= NULL;
for (it_2.set(table_ref_2); !it_2.end_of_fields(); it_2.next())
{
bool is_created_2;
Natural_join_column *cur_nj_col_2;
+ const char *cur_field_name_2;
if (!(cur_nj_col_2= it_2.get_or_create_column_ref(thd, &is_created_2)))
goto err;
- const char *cur_field_name_2= cur_nj_col_2->name();
+ cur_field_name_2= cur_nj_col_2->name();
/* If nj_col_1 was just created add it to the list of join columns. */
if (add_columns && is_created_2)
@@ -3480,14 +3486,14 @@
goto err;
}
nj_col_2= cur_nj_col_2;
- field_name_2= cur_field_name_2;
found= TRUE;
}
}
+ /* Force it_2.set() to use table_ref_2->join_columns. */
table_ref_2->is_join_columns_complete= TRUE;
add_columns= FALSE;
if (!found)
- continue;
+ continue; // No matching field
/*
field_1 and field_2 have the same names. Check if they are in the USING
@@ -3496,8 +3502,7 @@
*/
if (nj_col_2 &&
(!using_fields ||
- (using_fields &&
- test_if_string_in_list(field_name_1, using_fields))))
+ test_if_string_in_list(field_name_1, using_fields)))
{
Item *item_1= nj_col_1->create_item(thd);
Item *item_2= nj_col_2->create_item(thd);
@@ -3505,12 +3510,17 @@
Field *field_2= nj_col_2->field();
Item_ident *item_ident_1, *item_ident_2;
Name_resolution_context *context_1, *context_2;
+ Item_func_eq *eq_cond;
+
DBUG_PRINT("info", ("new equi-join condition: %s.%s = %s.%s",
table_ref_1->alias, field_1->field_name,
table_ref_2->alias, field_2->field_name));
+ if (!item_1 || !item_2)
+ goto err; // out of memory
+
/*
- The first assert guarantees that the two created items are of
+ The following assert checks that the two created items are of
type Item_ident.
*/
DBUG_ASSERT(!thd->lex->current_select->no_wrap_view_item);
@@ -3535,24 +3545,21 @@
resolution of these items, and to enable proper name resolution of
the items during the execute phase of PS.
*/
- if (set_new_item_local_context(thd, item_ident_1, table_ref_1))
- goto err;
- if (set_new_item_local_context(thd, item_ident_2, table_ref_2))
+ if (set_new_item_local_context(thd, item_ident_1, table_ref_1) ||
+ set_new_item_local_context(thd, item_ident_2, table_ref_2))
goto err;
- Item_func_eq *eq_cond= new Item_func_eq(item_ident_1, item_ident_2);
- if (!eq_cond)
- goto err; /* Out of memory. */
+ if (!(eq_cond= new Item_func_eq(item_ident_1, item_ident_2)))
+ goto err; /* Out of memory. */
/*
Add the new equi-join condition to the ON clause. Notice that
fix_fields() is applied to all ON conditions in setup_conds()
so we don't do it here.
*/
- if (table_ref_1->outer_join & JOIN_TYPE_RIGHT)
- add_join_on(table_ref_1, eq_cond);
- else
- add_join_on(table_ref_2, eq_cond);
+ add_join_on((table_ref_1->outer_join & JOIN_TYPE_RIGHT ?
+ table_ref_1 : table_ref_2),
+ eq_cond);
nj_col_1->is_common= nj_col_2->is_common= TRUE;
nj_col_1->is_coalesced= nj_col_2->is_coalesced= TRUE;
@@ -3624,8 +3631,8 @@
for the join that is being processed.
RETURN
- TRUE - if error when some common column is ambiguous
- FALSE - if OK
+ TRUE error: Some common column is ambiguous
+ FALSE OK
*/
static bool
@@ -3640,16 +3647,15 @@
bool is_created;
Query_arena *arena, backup;
bool result= TRUE;
-
+ List<Natural_join_column> *non_join_columns;
DBUG_ENTER("store_natural_using_join_columns");
+ DBUG_ASSERT(!natural_using_join->join_columns);
+
arena= thd->change_arena_if_needed(&backup);
- List<Natural_join_column> *non_join_columns;
- if (!(non_join_columns= new List<Natural_join_column>))
- goto err;
- DBUG_ASSERT(!natural_using_join->join_columns);
- if (!(natural_using_join->join_columns= new List<Natural_join_column>))
+ if (!(non_join_columns= new List<Natural_join_column>) ||
+ !(natural_using_join->join_columns= new List<Natural_join_column>))
goto err;
/* Append the columns of the first join operand. */
@@ -3657,6 +3663,10 @@
{
if (!(nj_col_1= it_1.get_or_create_column_ref(thd, &is_created)))
goto err;
+ /*
+ The following assert checks that mark_common_columns() was run and
+ we created the list table_ref_1->join_columns.
+ */
DBUG_ASSERT(!is_created);
if (nj_col_1->is_common)
{
@@ -3679,23 +3689,23 @@
List_iterator_fast<String> using_fields_it(*using_fields);
while ((using_field_name= using_fields_it++))
{
- const char *using_field_name_ptr= using_field_name->ptr();
+ const char *using_field_name_ptr= using_field_name->c_ptr();
List_iterator_fast<Natural_join_column>
it(*(natural_using_join->join_columns));
Natural_join_column *common_field;
- bool found= FALSE;
- while ((common_field= it++))
+
+ for (;;)
{
+ /* If reached the end of fields, and none was found, report error. */
+ if (!(common_field= it++))
+ {
+ my_error(ER_BAD_FIELD_ERROR, MYF(0), using_field_name_ptr,
+ current_thd->where);
+ goto err;
+ }
if (!my_strcasecmp(system_charset_info,
common_field->name(), using_field_name_ptr))
- found= TRUE;
- }
- if (!found)
- {
- my_error(ER_BAD_FIELD_ERROR, MYF(0), using_field_name_ptr,
- current_thd->where);
- delete non_join_columns;
- goto err;
+ break; // Found match
}
}
}
@@ -3705,22 +3715,24 @@
{
if (!(nj_col_2= it_2.get_or_create_column_ref(thd, &is_created)))
goto err;
+ /*
+ The following assert checks that mark_common_columns() was run and
+ we created the list table_ref_2->join_columns.
+ */
DBUG_ASSERT(!is_created);
if (!nj_col_2->is_common)
non_join_columns->push_back(nj_col_2);
else
+ {
/* Reset the common columns for the next call to mark_common_columns. */
nj_col_2->is_common= FALSE;
-
+ }
}
if (non_join_columns->elements > 0)
natural_using_join->join_columns->concat(non_join_columns);
- else
- delete non_join_columns;
natural_using_join->is_join_columns_complete= TRUE;
-
result= FALSE;
err:
@@ -3729,6 +3741,7 @@
DBUG_RETURN(result);
}
+
/*
Precompute and store the row types of the top-most NATURAL/USING joins.
@@ -3755,8 +3768,8 @@
from the right to the left in the FROM clause.
RETURN
- TRUE - if error
- FALSE - if OK
+ TRUE Error
+ FALSE OK
*/
static bool
@@ -3765,22 +3778,22 @@
TABLE_LIST *right_neighbor)
{
DBUG_ENTER("store_top_level_join_columns");
+
/* Call the procedure recursively for each nested table reference. */
if (table_ref->nested_join)
{
List_iterator_fast<TABLE_LIST> nested_it(table_ref->nested_join->join_list);
- TABLE_LIST *cur_table_ref;
TABLE_LIST *cur_left_neighbor= nested_it++;
TABLE_LIST *cur_right_neighbor= NULL;
+
while (cur_left_neighbor)
{
- cur_table_ref= cur_left_neighbor;
+ TABLE_LIST *cur_table_ref= cur_left_neighbor;
cur_left_neighbor= nested_it++;
- if (cur_table_ref->nested_join &&
- store_top_level_join_columns(thd, cur_table_ref,
- cur_left_neighbor, cur_right_neighbor))
- DBUG_RETURN(TRUE);
- cur_right_neighbor= cur_table_ref;
+ if (cur_table_ref->nested_join &&
+ store_top_level_join_columns(thd, cur_table_ref,
+ cur_left_neighbor, cur_right_neighbor))
+ DBUG_RETURN(TRUE); cur_right_neighbor= cur_table_ref;
}
}
@@ -3800,8 +3813,6 @@
*/
TABLE_LIST *table_ref_2= operand_it++; /* Second NATURAL join operand.*/
TABLE_LIST *table_ref_1= operand_it++; /* First NATURAL join operand. */
- TABLE_LIST *last_leaf_on_the_left= NULL;
- TABLE_LIST *first_leaf_on_the_right= NULL;
List<String> *using_fields= table_ref->join_using_fields;
uint found_using_fields;
@@ -3838,11 +3849,13 @@
/* Change this table reference to become a leaf for name resolution. */
if (left_neighbor)
{
+ TABLE_LIST *last_leaf_on_the_left;
last_leaf_on_the_left= left_neighbor->last_leaf_for_name_resolution();
last_leaf_on_the_left->next_name_resolution_table= table_ref;
}
if (right_neighbor)
{
+ TABLE_LIST *first_leaf_on_the_right;
first_leaf_on_the_right= right_neighbor->first_leaf_for_name_resolution();
table_ref->next_name_resolution_table= first_leaf_on_the_right;
}
@@ -3874,10 +3887,11 @@
to the left in the FROM clause.
RETURN
- TRUE - if error
- FALSE - if OK
+ TRUE Error
+ FALSE OK
*/
-static bool setup_natural_join_row_types(THD *thd, List<TABLE_LIST> *from_clause,
+static bool setup_natural_join_row_types(THD *thd,
+ List<TABLE_LIST> *from_clause,
Name_resolution_context *context)
{
thd->where= "from clause";
@@ -3891,11 +3905,12 @@
List_iterator_fast<TABLE_LIST> table_ref_it(*from_clause);
TABLE_LIST *table_ref; /* Current table reference. */
/* Table reference to the left of the current. */
- TABLE_LIST *left_neighbor= table_ref_it++;
+ TABLE_LIST *left_neighbor;
/* Table reference to the right of the current. */
TABLE_LIST *right_neighbor= NULL;
- while (left_neighbor)
+ /* Note that tables in the list are in reversed order */
+ for (left_neighbor= table_ref_it++; left_neighbor ; )
{
table_ref= left_neighbor;
left_neighbor= table_ref_it++;
@@ -3914,7 +3929,7 @@
/*
Store the top-most, left-most NATURAL/USING join, so that we start
the search from that one instead of context->table_list. At this point
- right_neigbor points to the left-most top-level table reference in the
+ right_neighbor points to the left-most top-level table reference in the
FROM clause.
*/
DBUG_ASSERT(right_neighbor);
@@ -4249,8 +4264,7 @@
for all columns
1 If any privilege is ok
RETURN
- 0 ok
- 'it' is updated to point at last inserted
+ 0 ok 'it' is updated to point at last inserted
1 error. Error message is generated but not sent to client
*/
@@ -4263,8 +4277,7 @@
bool found;
char name_buff[NAME_LEN+1];
DBUG_ENTER("insert_fields");
- DBUG_PRINT("arena", ("insert_fields: current arena: 0x%lx",
- (ulong)thd->current_arena));
+ DBUG_PRINT("arena", ("current arena: 0x%lx", (ulong)thd->current_arena));
if (db_name && lower_case_table_names)
{
@@ -4297,8 +4310,8 @@
*/
if (!tables->is_natural_join)
{
- if (table_name && my_strcasecmp(table_alias_charset, table_name, tables->alias)
- ||
+ if (table_name && my_strcasecmp(table_alias_charset, table_name,
+ tables->alias) ||
(db_name && strcmp(tables->db,db_name)))
continue;
}
@@ -4312,7 +4325,8 @@
{
field_iterator.set(tables);
if (check_grant_all_columns(thd, SELECT_ACL, field_iterator.grant(),
- field_iterator.db_name(), field_iterator.table_name(),
+ field_iterator.db_name(),
+ field_iterator.table_name(),
&field_iterator))
DBUG_RETURN(TRUE);
}
@@ -4336,21 +4350,19 @@
for (; !field_iterator.end_of_fields(); field_iterator.next())
{
- Item *not_used_item;
- uint not_used_field_index= NO_CACHED_FIELD_INDEX;
- const char *field_name= field_iterator.name();
Item *item;
- /* If this is a column of a NATURAL/USING join, and the star was qualified
- with a table (and database) name, check if the column is not a coalesced
- one, and if not, that is belongs to the same table.
+ /*
+ If this is a column of a NATURAL/USING join, and the star was
+ qualified with a table (and database) name, check if the
+ column is not a coalesced one, and if not, that is belongs to
+ the same table.
*/
if (tables->is_natural_join && table_name)
{
- if (field_iterator.is_coalesced()
- ||
- my_strcasecmp(table_alias_charset, table_name, field_iterator.table_name())
- ||
+ if (field_iterator.is_coalesced() ||
+ my_strcasecmp(table_alias_charset, table_name,
+ field_iterator.table_name()) ||
(db_name && strcmp(db_name, field_iterator.db_name())))
continue;
}
@@ -4360,8 +4372,8 @@
if (!found)
{
- it->replace(item); /* Replace '*' with the first found item. */
found= TRUE;
+ it->replace(item); /* Replace '*' with the first found item. */
}
else
it->after(item); /* Add 'item' to the SELECT list. */
@@ -4371,8 +4383,9 @@
Set privilege information for the fields of newly created views.
We have that (any_priviliges == TRUE) if and only if we are creating
a view. In the time of view creation we can't use the MERGE algorithm,
- therefore if 'tables' is itself a view, it is represented by a temporary
- table. Thus in this case we can be sure that 'item' is an Item_field.
+ therefore if 'tables' is itself a view, it is represented by a
+ temporary table. Thus in this case we can be sure that 'item' is an
+ Item_field.
*/
if (any_privileges)
{
@@ -4381,6 +4394,7 @@
DBUG_ASSERT(item->type() == Item::FIELD_ITEM);
Item_field *fld= (Item_field*) item;
const char *table_name= field_iterator.table_name();
+
if (!tables->schema_table &&
!(fld->have_privileges=
(get_column_grant(thd, field_iterator.grant(),
@@ -4414,11 +4428,12 @@
bool is_created;
TABLE *field_table;
/*
- In this case we are shure that the column ref will not be created
+ In this case we are sure that the column ref will not be created
because it was already created and stored with the natural join.
- */
+ */
Natural_join_column *nj_col;
- if (!(nj_col= field_iterator.get_or_create_column_ref(thd, &is_created)))
+ if (!(nj_col= field_iterator.get_or_create_column_ref(thd,
+ &is_created)))
DBUG_RETURN(TRUE);
DBUG_ASSERT(nj_col->table_field && !is_created);
field_table= nj_col->table_ref->table;
@@ -4450,9 +4465,9 @@
DBUG_RETURN(FALSE);
/*
- TODO: in the case when we skipped all columns because there was a qualified
- '*', and all columns were coalesced, we have to give a more meaningful message
- than ER_BAD_TABLE_ERROR.
+ TODO: in the case when we skipped all columns because there was a
+ qualified '*', and all columns were coalesced, we have to give a more
+ meaningful message than ER_BAD_TABLE_ERROR.
*/
if (!table_name)
my_message(ER_NO_TABLES_USED, ER(ER_NO_TABLES_USED), MYF(0));
| Thread |
|---|
| • bk commit into 5.0 tree (timour:1.1995) | timour | 17 Aug |
