【发布时间】：2022-01-18 17:51:35
【问题描述】：
我正在使用以下架构开发 MySQL 数据库：
我们在其中保存来自不同本体的信息 (exmp)。一些术语具有由relationship: 或is_a: 表示的关系（例如：MS:1000004，样品质量）。为了这个问题，让我们关注is_a 关系。
我们现在想要提供一个选项来搜索这些is_a 关系。所以一个函数，我们将MS:1000004/sample mass 作为输入并返回所有通过is_a 关系连接到它的术语。但不仅是与MS:1000004 直接相关的所有术语，还包括与孩子等相关的所有术语。这个image 描述得更好一点，其中thing 将是MS:1000004/sample mass，下面的所有内容都是我想要的结果。
目前我们正在使用一个相当未优化的递归函数作为存储过程来执行此操作：
DELIMITER $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `getAllTermsByParentTerm`(IN `parentOntology` varchar(512))
BEGIN
WITH RECURSIVE previous (accession, FK_OntologyName, name, definition, xrefvaluetype, isobsolete, fk_termAccession, relationshiptype, fk_termAccession_related, depth_level) AS (
SELECT
t.accession,
t.FK_OntologyName,
t.name,
t.definition,
t.xrefvaluetype,
t.isobsolete,
trt.fk_termAccession,
trt.relationshiptype,
trt.fk_termAccession_related,
0 depth_level
FROM Term t
INNER JOIN (TermRelationship AS trt, Term AS ref) ON(
t.Accession = trt.FK_TermAccession
AND trt.FK_TermAccession_Related = ref.Accession
AND (trt.RelationshipType = `is_a` OR trt.RelationshipType = `part_of`)
AND
(
trt.FK_TermAccession_Related = ref.Accession
AND ref.Name = parentOntology
)
)
UNION All
SELECT
t2.accession,
t2.FK_OntologyName,
t2.name,
t2.definition,
t2.xrefvaluetype,
t2.isobsolete,
trt2.fk_termAccession,
trt2.relationshiptype,
trt2.fk_termAccession_related,
(previous.depth_level+1) depth_level
FROM Term t2
INNER JOIN (TermRelationship AS trt2, previous) ON(
t2.Accession = trt2.FK_TermAccession
AND trt2.FK_TermAccession_Related = previous.Accession
)
)
SELECT
t.Accession,
t.FK_OntologyName,
t.Name,
t.Definition,
t.xRefValueType,
t.IsObsolete,
p.depth_level
FROM previous p
Inner JOIN Term AS t ON (
p.Accession = t.Accession
);
END$$
DELIMITER ;
问题是：我对 MySQL 没有那么丰富的经验，所以有什么选项可以优化这个功能，或者说 MySQL 总体上是错误的工具吗？
示例行：
术语
| Accession | FK_OntologyName | Name | Definition | XRefValueType | IsObsolete |
|------------|-----------------|----------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------|------------|
| TEST:0000000 | TEST | Proteomics Standards Initiative Mass Spectrometry Vocabularies | "Proteomics Standards Initiative Mass Spectrometry Vocabularies." [PSI:MS] | | 0 |
| TEST:1000001 | TEST | sample number | "A reference number relevant to the sample under study." [PSI:MS] | value-type:xsd\:string "The allowed value-type for this CV term." | 0 |
| TEST:1000002 | TEST | sample name | "A reference string relevant to the sample under study." [PSI:MS] | value-type:xsd\:string "The allowed value-type for this CV term." | 0 |
| TEST:1000003 | TEST | sample state | "The chemical phase of a pure sample, or the state of a mixed sample." [PSI:MS] | | 0 |
| TEST:1000004 | TEST | sample mass | "Total mass of sample used." [PSI:MS] | value-type:xsd\:float "The allowed value-type for this CV term." | 0 |
| TEST:1000005 | TEST | sample volume | "Total volume of solution used." [PSI:MS] | value-type:xsd\:float "The allowed value-type for this CV term." | 0 |
| TEST:1000006 | TEST | sample concentration | "Concentration of sample in picomol/ul, femtomol/ul or attomol/ul solution used." [PSI:MS] | value-type:xsd\:float "The allowed value-type for this CV term." | 0 |
| TEST:1000007 | TEST | inlet type | "The nature of the sample inlet." [PSI:MS] | | 0 |
| TEST:1000008 | TEST | ionization type | "The method by which gas phase ions are generated from the sample." [PSI:MS] | | 0 |
| TEST:1000011 | TEST | mass resolution | "Smallest mass difference between two equal magnitude peaks so that the valley between them is a specified fraction of the peak height." [PSI:MS] | value-type:xsd\:string "The allowed value-type for this CV term." | 0 |
| TEST:1000012 | TEST | resolution measurement method | "Which of the available standard measures is used to define whether two peaks are separate." [PSI:MS] | | 0 |
| TEST:1000014 | TEST | accuracy | "Accuracy is the degree of conformity of a measured mass to its actual value." [PSI:MS] | value-type:xsd\:float "The allowed value-type for this CV term." | 0 |
| TEST:1000015 | TEST | scan rate | "Rate in Th/sec for scanning analyzers." [PSI:MS] | value-type:xsd\:float "The allowed value-type for this CV term." | 0 |
| TEST:1000016 | TEST | scan start time | "The time that an analyzer started a scan, relative to the start of the MS run." [PSI:MS] | value-type:xsd\:float "The allowed value-type for this CV term." | 0 |
| TEST:1000018 | TEST | scan direction | "Direction in terms of m/z of the scan for scanning analyzers (low to high, or high to low)." [PSI:MS] | | 0 |
| TEST:1000019 | TEST | scan law | "Describes the function in control of the m/z scan (for scanning instruments). Commonly the scan function is linear, but in principle any function can be used." [PSI:MS] | | 0 |
| TEST:1000021 | TEST | reflectron state | "Status of the reflectron, turned on or off." [PSI:MS] | | 0 |
| TEST:1000022 | TEST | TOF Total Path Length | "The length of the field free drift space in a time of flight mass spectrometer." [PSI:MS] | value-type:xsd\:float "The allowed value-type for this CV term." | 0 | | value-type:xsd\:int "The allowed value-type for this CV term." | 0 |
术语关系
| ID | FK_TermAccession | RelationshipType | FK_TermAccession_Related | FK_OntologyName |
|--------|------------------|------------------|--------------------------|-----------------|
| 0 | TEST:1000001 | is_a | TEST:0000000 | TEST |
| 1 | TEST:1000002 | is_a | TEST:0000000 | TEST |
| 2 | TEST:1000003 | is_a | TEST:1000002 | TEST |
| 3 | TEST:1000004 | is_a | TEST:1000002 | TEST |
| 4 | TEST:1000005 | is_a | TEST:1000002 | TEST |
| 5 | TEST:1000006 | is_a | TEST:1000002 | TEST |
| 6 | TEST:1000007 | is_a | TEST:1000002 | TEST |
| 7 | TEST:1000008 | is_a | TEST:1000007 | TEST |
| 8 | TEST:1000011 | is_a | TEST:1000007 | TEST |
| 9 | TEST:1000022 | is_a | TEST:0000000 | TEST |
预期结果是执行TEST:0000000/Proteomics Standards Initiative Mass Spectrometry Vocabularies 的函数并获取以下所有术语，因为它们是TEST:0000000 的子/孙术语。
TEST:1000001
TEST:1000002
TEST:1000003
TEST:1000004
TEST:1000005
TEST:1000006
TEST:1000007
TEST:1000008
TEST:1000011
TEST:1000022
【问题讨论】：
标签： mysql database tree ontology