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BIT field woes

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* get_rec_bits() was always reading two bytes, even if the
  bit field contained only of one byte
* In various places the code used field->pack_length() bytes
  starting from field->ptr, while it should be field->pack_length_in_rec()
* Field_bit::key_cmp and Field_bit::cmp_max passed field_length as
  an argument to memcmp(), but field_length is the number of bits!
This commit is contained in:
Sergei Golubchik
2018-01-16 23:00:21 +01:00
parent 5e7593add4
commit 444587d8a3
5 changed files with 20 additions and 18 deletions
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2
sql/sql_join_cache.cc
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@@ -394,7 +394,7 @@ void JOIN_CACHE::create_flag_fields()
TABLE *table= tab->table;
/* Create a field for the null bitmap from table if needed */
if (tab->used_null_fields || tab->used_uneven_bit_fields)
if (tab->used_null_fields || tab->used_uneven_bit_fields)
length+= add_flag_field_to_join_cache(table->null_flags,
table->s->null_bytes,
&copy);