a fix.
bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs mysql-test/r/type_bit.result: test case. bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs mysql-test/t/type_bit.test: test case. bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs sql/field.h: a fix. bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs - max_length() returns length in bits. - introduced set_bit_ptr() function, which sets bit_ptr and bit_ofs. sql/item.cc: a fix. bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs - create Field_bit_as_char in case of MYSQL_TYPE_BIT in the Item::tmp_table_field_from_field_type() (we cannot create Field_bit here because of lack of information: bit_ptr, bit_ofs) sql/mysql_priv.h: a fix. bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs - table_cant_handle_bit_fields parameter added to the create_tmp_field() sql/sql_select.cc: a fix. bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs - create_tmp_field() changes to return create_tmp_field_from_item() result (actually, Field_bit_as_char) if table_cant_handle_bit_fields=1 for bit fields. - create_tmp_field() calls accordingly changed - call set_bit_ptr() for bit fields after the move_field() call during temporary table creation. sql/sql_table.cc: a fix. bug #10617: Insert from same table to same table give incorrect result for bit(4) column. bug #11091: union involving BIT: assertion failure in Item::tmp_table_field_from_field_type bug #11572: MYSQL_TYPE_BIT not taken care of in temp. table creation for VIEWs - changed the create_tmp_field() call
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