A SQL query cost at least 10s - sql

Question

There is a SQL query in my project witch cost 10s+ every time.
SELECT * FROM (
SELECT TP.TOPIC_ID, CK.NAME
FROM TD_TOPIC TP
INNER JOIN TD_CIRCLE CK on CK.CIRCLE_ID = TP.CIRCLE_ID AND CK.VALID = 1 AND SYSDATE > CK.EFF_TIME
WHERE
TP.VALID = 1 AND TP.FORWARD_FROM_TOPIC_ID = 0
AND (( TP.TOPIC_TYPE = 1 AND TP.APPROVAL_STATUS = 1) OR TP.TOPIC_TYPE IN (0, 2))
AND (TP.TOPIC_TYPE != 2 OR EXISTS (
SELECT 1 FROM TD_VOTE_TOPIC_CONFIG CFG
WHERE CFG.TOPIC_ID=TP.TOPIC_ID AND SYSDATE > CFG.EFFECT_TIME
))
AND (
EXISTS (
SELECT 1 FROM TD_TOPIC_TAG TG WHERE TG.TOPIC_ID=TP.TOPIC_ID
AND TG.TAG_ID IN (1, 2)
)
OR EXISTS (
SELECT 1 FROM TD_CIRCLE_TAG CTG WHERE CTG.CIRCLE_ID=CK.CIRCLE_ID
AND CTG.TAG_ID IN (1, 2)
)
)
ORDER BY TP.CREATE_TIME DESC
) WHERE ROWNUM<21
This is the query plan. It takes too many time on TABLE FULL ACCESS of TP_TOPIC.
3 -------------------------------------------------------------------------------------------------------------
4 | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
5 -------------------------------------------------------------------------------------------------------------
6 | 0 | SELECT STATEMENT | | 20 | 4560 | 4286 (1)| 00:00:52 |
7 |* 1 | COUNT STOPKEY | | | | | |
8 | 2 | VIEW | | 48986 | 10M| 4286 (1)| 00:00:52 |
9 |* 3 | SORT ORDER BY STOPKEY | | 48986 | 6936K| 4286 (1)| 00:00:52 |
10 | 4 | CONCATENATION | | | | | |
11 |* 5 | FILTER | | | | | |
12 |* 6 | HASH JOIN | | 24516 | 3471K| 2140 (1)| 00:00:26 |
13 |* 7 | TABLE ACCESS FULL | TD_CIRCLE | 415 | 44820 | 11 (0)| 00:00:01 |
14 |* 8 | TABLE ACCESS FULL | TD_TOPIC | 75205 | 2717K| 2128 (1)| 00:00:26 |
15 |* 9 | TABLE ACCESS BY INDEX ROWID| TD_CIRCLE_TAG | 1 | 8 | 2 (0)| 00:00:01 |
16 |* 10 | INDEX RANGE SCAN | IDX_TD_CIRCLE_TAG_TAG_ID | 1 | | 1 (0)| 00:00:01 |
17 |* 11 | TABLE ACCESS BY INDEX ROWID| TD_VOTE_TOPIC_CONFIG | 1 | 13 | 2 (0)| 00:00:01 |
18 |* 12 | INDEX RANGE SCAN | IDX_VTCFG_TOPICID | 1 | | 1 (0)| 00:00:01 |
19 |* 13 | FILTER | | | | | |
20 |* 14 | HASH JOIN | | 24516 | 3471K| 2140 (1)| 00:00:26 |
21 |* 15 | TABLE ACCESS FULL | TD_CIRCLE | 415 | 44820 | 11 (0)| 00:00:01 |
22 |* 16 | TABLE ACCESS FULL | TD_TOPIC | 75205 | 2717K| 2128 (1)| 00:00:26 |
23 |* 17 | TABLE ACCESS BY INDEX ROWID| TD_CIRCLE_TAG | 1 | 8 | 2 (0)| 00:00:01 |
24 |* 18 | INDEX RANGE SCAN | IDX_TD_CIRCLE_TAG_TAG_ID | 1 | | 1 (0)| 00:00:01 |
25 |* 19 | TABLE ACCESS BY INDEX ROWID| TD_TOPIC_TAG | 1 | 8 | 2 (0)| 00:00:01 |
26 |* 20 | INDEX RANGE SCAN | IDX_TD_TOPIC_TAG_TAG_ID | 1 | | 1 (0)| 00:00:01 |
27 |* 21 | TABLE ACCESS BY INDEX ROWID| TD_VOTE_TOPIC_CONFIG | 1 | 13 | 2 (0)| 00:00:01 |
28 |* 22 | INDEX RANGE SCAN | IDX_VTCFG_TOPICID | 1 | | 1 (0)| 00:00:01 |
29 -------------------------------------------------------------------------------------------------------------
Table TD_TOPIC is very large. And I found TABLE ACCESS (FULL) of TD_TOPIC. Maybe it is the problem. But I don't know how to make it access by index yet.

Answer 1

SELECT *
FROM (
SELECT TP.TOPIC_ID,
CK.NAME
FROM TD_TOPIC TP
INNER JOIN TD_CIRCLE CK
ON CK.CIRCLE_ID = TP.CIRCLE_ID
LEFT JOIN TD_VOTE_TOPIC_CONFIG CFG
ON CFG.TOPIC_ID=TP.TOPIC_ID
LEFT JOIN TD_CIRCLE_TAG CTG
ON CTG.CIRCLE_ID=CK.CIRCLE_ID
WHERE TP.VALID = 1
AND TP.FORWARD_FROM_TOPIC_ID = 0
AND CK.VALID = 1
AND CK.EFF_TIME < SYSDATE
AND (
(
TP.TOPIC_TYPE = 1
AND TP.APPROVAL_STATUS = 1
)
OR TP.TOPIC_TYPE IN (0, 2)
)
AND (
TP.TOPIC_TYPE != 2
OR
CFG.EFFECT_TIME < SYSDATE
)
AND (
(
TG.TOPIC_ID IS NOT NULL
AND TG.TAG_ID IN (1, 2)
)
OR
(
CTG.CIRCLE_ID IS NOT NULL
AND CTG.TAG_ID IN (1, 2)
)
)
ORDER BY TP.CREATE_TIME DESC
)
WHERE ROWNUM<21