Commit 66978616 authored by unknown's avatar unknown
Browse files

ha_innodb.cc: 

  Fix bug: InnoDB created all indexes on true VARCHARs as column prefix keys because field->pack_length() for a true VARCHAR is bigger than key_part->length; FOREIGN KEYs could not be created on true VARCHARs then


sql/ha_innodb.cc:
  Fix bug: InnoDB created all indexes on true VARCHARs as column prefix keys because field->pack_length() for a true VARCHAR is bigger than key_part->length; FOREIGN KEYs could not be created on true VARCHARs then
parent f21905e0

sql/ha_innodb.cc

+5 −1
Original line number Diff line number Diff line
@@ -4037,7 +4037,11 @@ create_index( 
		col_type = get_innobase_type_from_mysql_type(key_part->field);



		if (DATA_BLOB == col_type

		    || key_part->length < field->pack_length()) {

		    || (key_part->length < field->pack_length()

			&& field->type() != MYSQL_TYPE_VARCHAR)

		    || (field->type() == MYSQL_TYPE_VARCHAR

			&& key_part->length < field->pack_length()

			          - ((Field_varstring*)field)->length_bytes)) {



		        prefix_len = key_part->length;