获取clob/blob的长度同名函数，参数输入不同-- dbms_lob_getlength create function 'gbasedbt'.dbms_lob_getlength (blob) returns integer external name '$GBASEDBTDIR/extend/excompat.1.0/excompat.bld(dbms_lob_getlength)' language c; create function 'gbasedbt'.dbms_lob_getlength (clob) returns integer external name '$GBASEDBTDIR/extend/excompat.1.0/excompat.bld(dbms_lob_getlength)' language c;[...]