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question random update

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This commit is contained in:
czm 2021-01-06 00:39:18 +08:00
parent a5a6b40b5e
commit 1a3ecaf9e0
2 changed files with 92 additions and 18 deletions
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66
source/xzs/src/main/resources/mapper/QuestionMapper.xml
View File

@ -234,23 +234,55 @@
<select id="selectQuestionsByQuestionsNumber"
resultMap="BaseResultMap">
<foreach collection="eachList" item="each" separator="union">
(select q.skill_id, q.industry_id, i.name as industry_name, s.name as skill_name
, t.content ,q.difficult ,q.question_type from t_industry i
join t_question q on i.id = q.industry_id
join t_skill s on s.id = q.skill_id
join t_text_content t on t.id = q.info_text_content_id
<where>
<if test="each.difficult != null">
and q.difficult = #{each.difficult}
</if>
<if test="each.industryId != null">
and i.id = #{each.industryId}
</if>
<if test="each.skillId != null">
and s.id = #{each.skillId}
</if>
</where>
limit #{each.eachNumber} )
(SELECT
q.skill_id,
q.industry_id,
i. NAME AS industry_name,
s. NAME AS skill_name,
t.content,
q.difficult,
q.question_type
FROM
t_question q
JOIN (
SELECT
r1.id
FROM
t_question AS r1
JOIN (
SELECT
(
RAND() * (
SELECT
MAX(id)-#{each.eachNumber}
FROM
t_question
)
) AS row_id
) AS r2
JOIN t_industry i ON i.id = r1.industry_id
JOIN t_skill s ON s.id = r1.skill_id
JOIN t_text_content t ON t.id = r1.info_text_content_id
<where>
r1.deleted=0 AND
r1.id >= r2.row_id
<if test="each.difficult != null">
and q.difficult = #{each.difficult}
</if>
<if test="each.industryId != null">
and i.id = #{each.industryId}
</if>
<if test="each.skillId != null">
and s.id = #{each.skillId}
</if>
</where>
ORDER BY
r1.id ASC
LIMIT #{each.eachNumber}
) AS rows ON (rows.id = q.id)
JOIN t_industry i ON i.id = q.industry_id
JOIN t_skill s ON s.id = q.skill_id
JOIN t_text_content t ON t.id = q.info_text_content_id)
</foreach>
</select>

44
xzs-new.sql
View File

@ -373,4 +373,46 @@ CREATE TABLE `t_user_token` (
SET FOREIGN_KEY_CHECKS = 1;
(SELECT * FROM t_question WHERE skill_id = 1 LIMIT 2) UNION (SELECT * FROM t_question WHERE skill_id = 11 LIMIT 2) ;
(SELECT * FROM t_question WHERE skill_id = 1 LIMIT 2) UNION (SELECT * FROM t_question WHERE skill_id = 11 LIMIT 2) ;
SELECT
q.skill_id,
q.industry_id,
i. NAME AS industry_name,
s. NAME AS skill_name,
t.content,
q.difficult,
q.question_type
FROM
t_question q
JOIN (
SELECT
r1.id
FROM
t_question AS r1
JOIN (
SELECT
(
RAND() * (
SELECT
MAX(id)-7
FROM
t_question
)
) AS row_id
) AS r2
JOIN t_industry i ON i.id = r1.industry_id
JOIN t_skill s ON s.id = r1.skill_id
JOIN t_text_content t ON t.id = r1.info_text_content_id
WHERE
r1.deleted=0 AND
r1.id >= r2.row_id
AND r1.skill_id = 10
ORDER BY
r1.id ASC
LIMIT 7
) AS rows ON (rows.id = q.id)
JOIN t_industry i ON i.id = q.industry_id
JOIN t_skill s ON s.id = q.skill_id
JOIN t_text_content t ON t.id = q.info_text_content_id;