返り値: blob_handleで指定したBLOBを含む文字列。
fbsql_read_blob()
reads BLOB data from the database. If a select statement
contains BLOB and/or BLOB columns FrontBase will return the
data directly when data is fetched. This default behavior can
be changed with
fbsql_set_lob_mode()
so the fetch functions will return handles to BLOB and CLOB
data. If a handle is fetched a user must call
fbsql_read_blob()
to get the actual BLOB data from the database.
fbsql_create_blob()
,
fbsql_read_blob()
,
fbsql_read_clob()
,
fbsql_set_lob_mode()
も参照下さい。