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Merge 10.3 into 10.4, except for MDEV-20265

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The MDEV-20265 commit e746f451d5
introduces DBUG_ASSERT(right_op == r_tbl) in
st_select_lex::add_cross_joined_table(), and that assertion would
fail in several tests that exercise joins. That commit was skipped
in this merge, and a separate fix of MDEV-20265 will be necessary in 10.4.
This commit is contained in:
Marko Mäkelä
2019-08-23 08:06:17 +03:00
parent 235cf969d2 b96e4424fb
commit efb8485d85
66 changed files with 689 additions and 317 deletions
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14
sql/sql_statistics.cc
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@ -1820,16 +1820,13 @@ public:
bool is_partial_fields_present;
Index_prefix_calc(THD *thd, TABLE *table, KEY *key_info)
: index_table(table), index_info(key_info)
: index_table(table), index_info(key_info), prefixes(0), empty(true),
calc_state(NULL), is_single_comp_pk(false), is_partial_fields_present(false)
{
uint i;
Prefix_calc_state *state;
uint key_parts= table->actual_n_key_parts(key_info);
empty= TRUE;
prefixes= 0;
LINT_INIT_STRUCT(calc_state);
is_partial_fields_present= is_single_comp_pk= FALSE;
uint pk= table->s->primary_key;
if ((uint) (table->key_info - key_info) == pk &&
table->key_info[pk].user_defined_key_parts == 1)
@ -2129,7 +2126,12 @@ int alloc_statistics_for_table(THD* thd, TABLE *table)
Histogram_type hist_type= (Histogram_type) (thd->variables.histogram_type);
uchar *histogram= NULL;
if (hist_size > 0)
histogram= (uchar *) alloc_root(&table->mem_root, hist_size * columns);
{
if ((histogram= (uchar *) alloc_root(&table->mem_root,
hist_size * columns)))
bzero(histogram, hist_size * columns);
}
if (!table_stats || !column_stats || !index_stats || !idx_avg_frequency ||
(hist_size && !histogram))