Hello,
I using postgresql 9.5.1 and I have problem to match value in one field.
Both tables are text:
=# \d list_cards_tbl;
Column | Type | Modifiers
-----------+---------+--------------------------------------------------------------
recid | integer | not null default
nextval('list_cards_tbl_recid_seq'::regclass)
imsi | text |
Indexes:
"imsi_list_cards_tbl" btree (imsi)
=# \d list_newcard_tbl;
Column | Type | Modifiers
------------+---------+---------------------------------------------------------------
recid | integer | not null default
nextval('list_newcard_tbl_recid_seq'::regclass)
serial | text |
imsi | text |
Indexes:
"list_newcard_tbl_pkey" PRIMARY KEY, btree (recid)
"list_newcard_ser_idx" btree (serial)
=# select imsi, md5(imsi), bit_length(imsi) from list_newcards_tbl where
imsi = '284110000123315';
imsi | md5 | bit_length
-----------------+----------------------------------+------------
284110000123315 | b438e984c97483bb942eaaed5c0147f3 | 120
(1 row)
So far so good, value of table list_newcard_tbl is fine, problem is in
table list_cards_tbl
=# select imsi from list_cards_tbl where imsi = '284110000123315';
imsi
------
(0 rows)
No value, lets change to LIKE
=# select imsi, md5(imsi), bit_length(imsi) from list_cards_tbl where
imsi like '284110000123315%';
imsi | md5 | bit_length
-----------------+----------------------------------+------------
284110000123315 | b438e984c97483bb942eaaed5c0147f3 | 120
(1 row)
Both have the same MD5 sum, also bit length.
With EXPLAIN:
=# explain analyse select imsi from list_cards_tbl where imsi =
'284110000123315';
QUERY PLAN
--------------------------------------------------------------------------------------------------------------------------------------
Index Only Scan using imsi_list_card_tbl on list_cards_tbl
(cost=0.28..4.30 rows=1 width=16) (actual time=0.021..0.021 rows=0
loops=1)
Index Cond: (imsi = '284110000123315'::text)
Heap Fetches: 0
Planning time: 0.080 ms
Execution time: 0.045 ms
(5 rows)
I see only index scan, so I do:
=# reindex table list_cards_tbl;
REINDEX
=# vacuum list_cards_tbl;
VACUUM
=# select imsi, md5(imsi), bit_length(imsi) from list_cards_tbl where
imsi = '284110000123315';
imsi | md5 | bit_length
------+-----+------------
(0 rows)
Still cant find value.
Some settings:
enable_bitmapscan | on
| Enables the planner's use of bitmap-scan plans.
enable_hashagg | on
| Enables the planner's use of hashed aggregation
plans.
enable_hashjoin | on
| Enables the planner's use of hash join plans.
enable_indexonlyscan | on
| Enables the planner's use of index-only-scan
plans.
enable_indexscan | on
| Enables the planner's use of index-scan plans.
enable_material | on
| Enables the planner's use of materialization.
enable_mergejoin | on
| Enables the planner's use of merge join plans.
enable_nestloop | on
| Enables the planner's use of nested-loop join
plans.
enable_seqscan | on
| Enables the planner's use of sequential-scan
plans.
enable_sort | on
| Enables the planner's use of explicit sort steps.
enable_tidscan | on
| Enables the planner's use of TID scan plans.
client_encoding | UTF8
| Sets the client's character set encoding.
lc_collate | bg_BG.utf8
| Shows the collation order locale.
lc_ctype | bg_BG.utf8
| Shows the character classification and case
conversion locale.
lc_messages | bg_BG.utf8
| Sets the language in which messages are
displayed.
lc_monetary | bg_BG.utf8
| Sets the locale for formatting monetary amounts.
lc_numeric | bg_BG.utf8
| Sets the locale for formatting numbers.
lc_time | bg_BG.utf8
| Sets the locale for formatting date and time
values.
server_encoding | UTF8
| Sets the server (database) character set
encoding.
server_version | 9.5.1
| Shows the server version.
server_version_num | 90501
| Shows the server version as an integer.
Can some one point me what can be the problem with this value and how to
resolve it ? I think probably index problem but I reindex that table and
problem is not resolved or some broken utf8 char but md5 and bit_length
should not to be equal.
Regards,
HS
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