/
similar_statements.sql
39 lines (39 loc) · 1.03 KB
/
similar_statements.sql
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
-- Searches for similar sql statements in v$sql
-- that look similar and could potentially make
-- use of bind variables.
--
-- where col_number = 42
-- is replaced by
-- where col_number = #
--
-- ----------------------------
--
-- where col_text = 'foo bar baz'
-- is replaced by
-- where col_text = $
--
-- This is of course only a rudimentary approach...
--
select
count(*),
regexp_replace(
regexp_replace(
regexp_replace(
regexp_replace(sql_text,
'(''[^'']*'')' , '$' ) -- Strings -> $
, '(=|<|>|\s+)(-?\d+\.\d+)', '\1#') -- 44.4 -> #
, '(=|<|>|\s+)(-?\.\d+)' , '\1#') -- .49 -> #
, '(=|<|>|\s+)(-?\d+)' , '\1#') -- 22 -> #
from
v$sql
group by
regexp_replace(
regexp_replace(
regexp_replace(
regexp_replace(sql_text,
'(''[^'']*'')' , '$' ) -- Strings -> $
, '(=|<|>|\s+)(-?\d+\.\d+)', '\1#') -- 44.4 -> #
, '(=|<|>|\s+)(-?\.\d+)' , '\1#') -- .49 -> #
, '(=|<|>|\s+)(-?\d+)' , '\1#') -- 22 -> #
order by
count(*) desc;