diff options
| -rw-r--r-- | doc/src/sgml/func.sgml | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 219ba9abf39..ec140040843 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -11102,8 +11102,10 @@ SELECT b1 = ANY((SELECT b2 FROM t2 ...)) FROM t1 ...; <programlisting> SELECT count(*) FROM sometable; </programlisting> - will be executed by <productname>PostgreSQL</productname> using a - sequential scan of the entire table. + will require effort proportional to the size of the table: + <productname>PostgreSQL</productname> will need to scan either the + entire table or the entirety of an index which includes all rows in + the table. </para> </note> |