可视化 sql 语句正在使用的内容
Visualizing what an sql statement is using
我有一个 SQL 语句，它使用通过另一组语句构建的一些 tables，而这些语句又分别由更多组语句等构建，大约 8 度呈扇形展开大约 25 tables（它在第 4 度变宽，但该级别最终开始指向相同的几个常见来源）。
我正在为 Graphviz 制作一个点文件，该文件显示每个语句的 selected 列，并且每个 table 来自哪个列。由于涉及案例陈述和功能，有时每列有多个来源。一旦达到几个级别，它不仅有点混乱，而且难以正确阅读或书写。
我一直在尝试寻找是否有一种工具可以分析 SQL select 语句和（而不是制作执行计划图）哪些输入到哪些输出的图表。最好该工具能够将其与多层语句结合起来。
有人知道这样的工具吗？
你看，在 Google 中搜索 "graph an sql statement" 之类的结果只会得到很多关于如何使用 SQL 查询中的数据制作图表和图形的结果，或特定于图形数据库的东西。既不存在也不存在，将 "graph" 更改为 "visualizing" 也无济于事。
例如
SELECT CASE WHEN A.info IS NULL THEN 'Jam'
WHEN B.inform LIKE 'N/A%' THEN 'Butter'
WHEN A.info > 4 THEN 'Apricot'
ELSE 'Organic'
END AS information,
-- More of the same
FROM 2_KU_4_SKU AS A
LEFT JOIN
SKU_HOWS_ROC AS B
ON A.fskuid = B.idfsk;
INSERT INTO 2_KU_4_SKU
-- More case statements and other stuff but lets just say
sku_id AS fskuid,
short_sku_desc AS info
FROM BASIC_SKU_TABLE_NOT_A_VIEW_TEDS_VERSION_LATEST_Q108;
INSERT INTO SKU_HOWS_ROC
-- You guessed it
sku_id AS idfsk, -- Because words
sku_blurb AS inform
FROM BASIC_SKU_TABLE_STILL_NOT_A_VIEW_BILLS_EXCELLENT_VERSION;
可能希望引导一个工具来制定类似的东西：
通过基本解析上述 SQL 和（一个选项）为 Graphviz 生成 DOT 文件，如下所示：
Digraph G {
fontname = "sans-serif";
node [fontname="sans-serif",shape="record"];
subgraph cluster0 {
label="SELECT";
information;
}
subgraph cluster1 {
label="SKU_HOWS_ROC";
a_idfsk [label="idfsk"];
a_info [label="info"];
}
a_info -> information;
subgraph cluster2 {
label="2_KU_4_SKU";
b_fskuid [label="fskuid"];
b_inform [label="inform"];
}
b_inform -> information;
b_fskuid -> a_idfsk -> b_fskuid;
subgraph cluster3 {
label="BASIC_SKU_TABLE_NOT_A_VIEW_TEDS_VERSION_LATEST_Q108";
c_sku_id [label="sku_id"];
c_short_sku_desc [label="short_sku_desc"];
}
c_short_sku_desc -> a_info;
c_sku_id -> a_idfsk;
subgraph cluster4 {
label="BASIC_SKU_TABLE_STILL_NOT_A_VIEW_BILLS_EXCELLENT_VERSION";
d_sku_id [label="sku_id"];
d_sku_blurb [label="sku_blurb"];
}
d_sku_id -> b_fskuid;
d_sku_blurb -> b_inform;
}
如果能用花哨的记录类型节点标签画一下table就更好了
而且，由于 Graphviz 可以生成 SVG，但 Whosebug 似乎无法以我能看到的任何方式嵌入它，运行 这个 SVG 片段可以看看它的样子（如果上面嵌入的 imgur 是正在工作）。
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<!-- Generated by graphviz version 2.39.20160727.0821 (20160727.0821)
-->
<!-- Title: G Pages: 1 -->
<svg viewBox="0.00 0.00 988.00 265.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 261)">
<title>G</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-261 984,-261 984,4 -4,4" />
<g id="clust2" class="cluster">
<title>cluster1</title>
<polygon fill="none" stroke="black" points="329,-91 329,-166 471,-166 471,-91 329,-91" />
<text text-anchor="middle" x="400" y="-150.8" font-family="sans-serif" font-size="14.00">SKU_HOWS_ROC</text>
</g>
<g id="clust1" class="cluster">
<title>cluster0</title>
<polygon fill="none" stroke="black" points="388,-8 388,-83 490,-83 490,-8 388,-8" />
<text text-anchor="middle" x="439" y="-67.8" font-family="sans-serif" font-size="14.00">SELECT</text>
</g>
<g id="clust3" class="cluster">
<title>cluster2</title>
<polygon fill="none" stroke="black" points="485,-91 485,-166 627,-166 627,-91 485,-91" />
<text text-anchor="middle" x="556" y="-150.8" font-family="sans-serif" font-size="14.00">2_KU_4_SKU</text>
</g>
<g id="clust5" class="cluster">
<title>cluster4</title>
<polygon fill="none" stroke="black" points="477,-174 477,-249 972,-249 972,-174 477,-174" />
<text text-anchor="middle" x="724.5" y="-233.8" font-family="sans-serif" font-size="14.00">BASIC_SKU_TABLE_STILL_NOT_A_VIEW_BILLS_EXCELLENT_VERSION</text>
</g>
<g id="clust4" class="cluster">
<title>cluster3</title>
<polygon fill="none" stroke="black" points="8,-174 8,-249 469,-249 469,-174 8,-174" />
<text text-anchor="middle" x="238.5" y="-233.8" font-family="sans-serif" font-size="14.00">BASIC_SKU_TABLE_NOT_A_VIEW_TEDS_VERSION_LATEST_Q108</text>
</g>
<!-- information -->
<g id="node1" class="node">
<title>information</title>
<polygon fill="none" stroke="black" points="396.373,-16.5 396.373,-52.5 481.627,-52.5 481.627,-16.5 396.373,-16.5" />
<text text-anchor="middle" x="439" y="-30.3" font-family="sans-serif" font-size="14.00">information</text>
</g>
<!-- a_idfsk -->
<g id="node2" class="node">
<title>a_idfsk</title>
<polygon fill="none" stroke="black" points="409,-99.5 409,-135.5 463,-135.5 463,-99.5 409,-99.5" />
<text text-anchor="middle" x="435.893" y="-113.3" font-family="sans-serif" font-size="14.00">idfsk</text>
</g>
<!-- b_fskuid -->
<g id="node4" class="node">
<title>b_fskuid</title>
<polygon fill="none" stroke="black" points="565,-99.5 565,-135.5 619,-135.5 619,-99.5 565,-99.5" />
<text text-anchor="middle" x="591.786" y="-113.3" font-family="sans-serif" font-size="14.00">fskuid</text>
</g>
<!-- a_idfsk->b_fskuid -->
<g id="edge4" class="edge">
<title>a_idfsk->b_fskuid</title>
<path fill="none" stroke="black" d="M446.616,-135.503C455.979,-149.063 471.07,-165.983 490,-170 504.373,-173.05 544.531,-175.185 556,-166 563.413,-160.064 570.086,-152.258 575.615,-144.648" />
<polygon fill="black" stroke="black" points="578.818,-146.164 581.557,-135.929 573.033,-142.222 578.818,-146.164" />
</g>
<!-- a_info -->
<g id="node3" class="node">
<title>a_info</title>
<polygon fill="none" stroke="black" points="337,-99.5 337,-135.5 391,-135.5 391,-99.5 337,-99.5" />
<text text-anchor="middle" x="363.786" y="-113.3" font-family="sans-serif" font-size="14.00">info</text>
</g>
<!-- a_info->information -->
<g id="edge1" class="edge">
<title>a_info->information</title>
<path fill="none" stroke="black" d="M380.274,-99.4902C390.62,-88.0401 404.181,-73.0328 415.665,-60.3245" />
<polygon fill="black" stroke="black" points="418.391,-62.5274 422.499,-52.7612 413.198,-57.8343 418.391,-62.5274" />
</g>
<!-- b_fskuid->a_idfsk -->
<g id="edge3" class="edge">
<title>b_fskuid->a_idfsk</title>
<path fill="none" stroke="black" d="M581.557,-135.929C575.195,-145.863 566.313,-157.741 556,-166 544.531,-175.185 504.373,-173.05 490,-170 474.767,-166.767 462.021,-155.18 452.744,-143.712" />
<polygon fill="black" stroke="black" points="455.403,-141.423 446.616,-135.503 449.793,-145.61 455.403,-141.423" />
</g>
<!-- b_inform -->
<g id="node5" class="node">
<title>b_inform</title>
<polygon fill="none" stroke="black" points="492.552,-99.5 492.552,-135.5 547.448,-135.5 547.448,-99.5 492.552,-99.5" />
<text text-anchor="middle" x="520" y="-113.3" font-family="sans-serif" font-size="14.00">inform</text>
</g>
<!-- b_inform->information -->
<g id="edge2" class="edge">
<title>b_inform->information</title>
<path fill="none" stroke="black" d="M502.424,-99.4902C491.145,-87.9321 476.328,-72.7493 463.852,-59.9655" />
<polygon fill="black" stroke="black" points="466.31,-57.4735 456.821,-52.7612 461.301,-62.3626 466.31,-57.4735" />
</g>
<!-- c_sku_id -->
<g id="node6" class="node">
<title>c_sku_id</title>
<polygon fill="none" stroke="black" points="404.766,-182.5 404.766,-218.5 461.234,-218.5 461.234,-182.5 404.766,-182.5" />
<text text-anchor="middle" x="433" y="-196.3" font-family="sans-serif" font-size="14.00">sku_id</text>
</g>
<!-- c_sku_id->a_idfsk -->
<g id="edge6" class="edge">
<title>c_sku_id->a_idfsk</title>
<path fill="none" stroke="black" d="M433.651,-182.49C434.037,-171.796 434.536,-157.999 434.975,-145.871" />
<polygon fill="black" stroke="black" points="438.476,-145.881 435.34,-135.761 431.481,-145.628 438.476,-145.881" />
</g>
<!-- c_short_sku_desc -->
<g id="node7" class="node">
<title>c_short_sku_desc</title>
<polygon fill="none" stroke="black" points="272.973,-182.5 272.973,-218.5 387.027,-218.5 387.027,-182.5 272.973,-182.5" />
<text text-anchor="middle" x="330" y="-196.3" font-family="sans-serif" font-size="14.00">short_sku_desc</text>
</g>
<!-- c_short_sku_desc->a_info -->
<g id="edge5" class="edge">
<title>c_short_sku_desc->a_info</title>
<path fill="none" stroke="black" d="M337.377,-182.49C341.847,-171.58 347.639,-157.441 352.679,-145.138" />
<polygon fill="black" stroke="black" points="355.968,-146.342 356.519,-135.761 349.49,-143.688 355.968,-146.342" />
</g>
<!-- d_sku_id -->
<g id="node8" class="node">
<title>d_sku_id</title>
<polygon fill="none" stroke="black" points="579.766,-182.5 579.766,-218.5 636.234,-218.5 636.234,-182.5 579.766,-182.5" />
<text text-anchor="middle" x="608" y="-196.3" font-family="sans-serif" font-size="14.00">sku_id</text>
</g>
<!-- d_sku_id->b_fskuid -->
<g id="edge7" class="edge">
<title>d_sku_id->b_fskuid</title>
<path fill="none" stroke="black" d="M604.528,-182.49C602.467,-171.796 599.807,-157.999 597.469,-145.871" />
<polygon fill="black" stroke="black" points="600.85,-144.918 595.52,-135.761 593.976,-146.243 600.85,-144.918" />
</g>
<!-- d_sku_blurb -->
<g id="node9" class="node">
<title>d_sku_blurb</title>
<polygon fill="none" stroke="black" points="484.648,-182.5 484.648,-218.5 561.352,-218.5 561.352,-182.5 484.648,-182.5" />
<text text-anchor="middle" x="523" y="-196.3" font-family="sans-serif" font-size="14.00">sku_blurb</text>
</g>
<!-- d_sku_blurb->b_inform -->
<g id="edge8" class="edge">
<title>d_sku_blurb->b_inform</title>
<path fill="none" stroke="black" d="M522.349,-182.49C521.963,-171.796 521.464,-157.999 521.025,-145.871" />
<polygon fill="black" stroke="black" points="524.519,-145.628 520.66,-135.761 517.524,-145.881 524.519,-145.628" />
</g>
</g>
</svg>
您可以使用 MySQL Workbench 中的 Visual Explain 功能。我没有亲自使用过它，但看起来它可能比标准的 EXPLAIN 命令提供更好的洞察力。看看这个link，祝你好运！
https://dev.mysql.com/doc/workbench/en/wb-tutorial-visual-explain-dbt3.html
我有一个 SQL 语句，它使用通过另一组语句构建的一些 tables，而这些语句又分别由更多组语句等构建，大约 8 度呈扇形展开大约 25 tables（它在第 4 度变宽，但该级别最终开始指向相同的几个常见来源）。
我正在为 Graphviz 制作一个点文件，该文件显示每个语句的 selected 列，并且每个 table 来自哪个列。由于涉及案例陈述和功能，有时每列有多个来源。一旦达到几个级别，它不仅有点混乱，而且难以正确阅读或书写。
我一直在尝试寻找是否有一种工具可以分析 SQL select 语句和（而不是制作执行计划图）哪些输入到哪些输出的图表。最好该工具能够将其与多层语句结合起来。
有人知道这样的工具吗？
你看，在 Google 中搜索 "graph an sql statement" 之类的结果只会得到很多关于如何使用 SQL 查询中的数据制作图表和图形的结果，或特定于图形数据库的东西。既不存在也不存在，将 "graph" 更改为 "visualizing" 也无济于事。
例如
SELECT CASE WHEN A.info IS NULL THEN 'Jam'
WHEN B.inform LIKE 'N/A%' THEN 'Butter'
WHEN A.info > 4 THEN 'Apricot'
ELSE 'Organic'
END AS information,
-- More of the same
FROM 2_KU_4_SKU AS A
LEFT JOIN
SKU_HOWS_ROC AS B
ON A.fskuid = B.idfsk;
INSERT INTO 2_KU_4_SKU
-- More case statements and other stuff but lets just say
sku_id AS fskuid,
short_sku_desc AS info
FROM BASIC_SKU_TABLE_NOT_A_VIEW_TEDS_VERSION_LATEST_Q108;
INSERT INTO SKU_HOWS_ROC
-- You guessed it
sku_id AS idfsk, -- Because words
sku_blurb AS inform
FROM BASIC_SKU_TABLE_STILL_NOT_A_VIEW_BILLS_EXCELLENT_VERSION;
可能希望引导一个工具来制定类似的东西：
通过基本解析上述 SQL 和（一个选项）为 Graphviz 生成 DOT 文件，如下所示：
Digraph G {
fontname = "sans-serif";
node [fontname="sans-serif",shape="record"];
subgraph cluster0 {
label="SELECT";
information;
}
subgraph cluster1 {
label="SKU_HOWS_ROC";
a_idfsk [label="idfsk"];
a_info [label="info"];
}
a_info -> information;
subgraph cluster2 {
label="2_KU_4_SKU";
b_fskuid [label="fskuid"];
b_inform [label="inform"];
}
b_inform -> information;
b_fskuid -> a_idfsk -> b_fskuid;
subgraph cluster3 {
label="BASIC_SKU_TABLE_NOT_A_VIEW_TEDS_VERSION_LATEST_Q108";
c_sku_id [label="sku_id"];
c_short_sku_desc [label="short_sku_desc"];
}
c_short_sku_desc -> a_info;
c_sku_id -> a_idfsk;
subgraph cluster4 {
label="BASIC_SKU_TABLE_STILL_NOT_A_VIEW_BILLS_EXCELLENT_VERSION";
d_sku_id [label="sku_id"];
d_sku_blurb [label="sku_blurb"];
}
d_sku_id -> b_fskuid;
d_sku_blurb -> b_inform;
}
如果能用花哨的记录类型节点标签画一下table就更好了
而且，由于 Graphviz 可以生成 SVG，但 Whosebug 似乎无法以我能看到的任何方式嵌入它，运行 这个 SVG 片段可以看看它的样子（如果上面嵌入的 imgur 是正在工作）。
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<!-- Generated by graphviz version 2.39.20160727.0821 (20160727.0821)
-->
<!-- Title: G Pages: 1 -->
<svg viewBox="0.00 0.00 988.00 265.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 261)">
<title>G</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-261 984,-261 984,4 -4,4" />
<g id="clust2" class="cluster">
<title>cluster1</title>
<polygon fill="none" stroke="black" points="329,-91 329,-166 471,-166 471,-91 329,-91" />
<text text-anchor="middle" x="400" y="-150.8" font-family="sans-serif" font-size="14.00">SKU_HOWS_ROC</text>
</g>
<g id="clust1" class="cluster">
<title>cluster0</title>
<polygon fill="none" stroke="black" points="388,-8 388,-83 490,-83 490,-8 388,-8" />
<text text-anchor="middle" x="439" y="-67.8" font-family="sans-serif" font-size="14.00">SELECT</text>
</g>
<g id="clust3" class="cluster">
<title>cluster2</title>
<polygon fill="none" stroke="black" points="485,-91 485,-166 627,-166 627,-91 485,-91" />
<text text-anchor="middle" x="556" y="-150.8" font-family="sans-serif" font-size="14.00">2_KU_4_SKU</text>
</g>
<g id="clust5" class="cluster">
<title>cluster4</title>
<polygon fill="none" stroke="black" points="477,-174 477,-249 972,-249 972,-174 477,-174" />
<text text-anchor="middle" x="724.5" y="-233.8" font-family="sans-serif" font-size="14.00">BASIC_SKU_TABLE_STILL_NOT_A_VIEW_BILLS_EXCELLENT_VERSION</text>
</g>
<g id="clust4" class="cluster">
<title>cluster3</title>
<polygon fill="none" stroke="black" points="8,-174 8,-249 469,-249 469,-174 8,-174" />
<text text-anchor="middle" x="238.5" y="-233.8" font-family="sans-serif" font-size="14.00">BASIC_SKU_TABLE_NOT_A_VIEW_TEDS_VERSION_LATEST_Q108</text>
</g>
<!-- information -->
<g id="node1" class="node">
<title>information</title>
<polygon fill="none" stroke="black" points="396.373,-16.5 396.373,-52.5 481.627,-52.5 481.627,-16.5 396.373,-16.5" />
<text text-anchor="middle" x="439" y="-30.3" font-family="sans-serif" font-size="14.00">information</text>
</g>
<!-- a_idfsk -->
<g id="node2" class="node">
<title>a_idfsk</title>
<polygon fill="none" stroke="black" points="409,-99.5 409,-135.5 463,-135.5 463,-99.5 409,-99.5" />
<text text-anchor="middle" x="435.893" y="-113.3" font-family="sans-serif" font-size="14.00">idfsk</text>
</g>
<!-- b_fskuid -->
<g id="node4" class="node">
<title>b_fskuid</title>
<polygon fill="none" stroke="black" points="565,-99.5 565,-135.5 619,-135.5 619,-99.5 565,-99.5" />
<text text-anchor="middle" x="591.786" y="-113.3" font-family="sans-serif" font-size="14.00">fskuid</text>
</g>
<!-- a_idfsk->b_fskuid -->
<g id="edge4" class="edge">
<title>a_idfsk->b_fskuid</title>
<path fill="none" stroke="black" d="M446.616,-135.503C455.979,-149.063 471.07,-165.983 490,-170 504.373,-173.05 544.531,-175.185 556,-166 563.413,-160.064 570.086,-152.258 575.615,-144.648" />
<polygon fill="black" stroke="black" points="578.818,-146.164 581.557,-135.929 573.033,-142.222 578.818,-146.164" />
</g>
<!-- a_info -->
<g id="node3" class="node">
<title>a_info</title>
<polygon fill="none" stroke="black" points="337,-99.5 337,-135.5 391,-135.5 391,-99.5 337,-99.5" />
<text text-anchor="middle" x="363.786" y="-113.3" font-family="sans-serif" font-size="14.00">info</text>
</g>
<!-- a_info->information -->
<g id="edge1" class="edge">
<title>a_info->information</title>
<path fill="none" stroke="black" d="M380.274,-99.4902C390.62,-88.0401 404.181,-73.0328 415.665,-60.3245" />
<polygon fill="black" stroke="black" points="418.391,-62.5274 422.499,-52.7612 413.198,-57.8343 418.391,-62.5274" />
</g>
<!-- b_fskuid->a_idfsk -->
<g id="edge3" class="edge">
<title>b_fskuid->a_idfsk</title>
<path fill="none" stroke="black" d="M581.557,-135.929C575.195,-145.863 566.313,-157.741 556,-166 544.531,-175.185 504.373,-173.05 490,-170 474.767,-166.767 462.021,-155.18 452.744,-143.712" />
<polygon fill="black" stroke="black" points="455.403,-141.423 446.616,-135.503 449.793,-145.61 455.403,-141.423" />
</g>
<!-- b_inform -->
<g id="node5" class="node">
<title>b_inform</title>
<polygon fill="none" stroke="black" points="492.552,-99.5 492.552,-135.5 547.448,-135.5 547.448,-99.5 492.552,-99.5" />
<text text-anchor="middle" x="520" y="-113.3" font-family="sans-serif" font-size="14.00">inform</text>
</g>
<!-- b_inform->information -->
<g id="edge2" class="edge">
<title>b_inform->information</title>
<path fill="none" stroke="black" d="M502.424,-99.4902C491.145,-87.9321 476.328,-72.7493 463.852,-59.9655" />
<polygon fill="black" stroke="black" points="466.31,-57.4735 456.821,-52.7612 461.301,-62.3626 466.31,-57.4735" />
</g>
<!-- c_sku_id -->
<g id="node6" class="node">
<title>c_sku_id</title>
<polygon fill="none" stroke="black" points="404.766,-182.5 404.766,-218.5 461.234,-218.5 461.234,-182.5 404.766,-182.5" />
<text text-anchor="middle" x="433" y="-196.3" font-family="sans-serif" font-size="14.00">sku_id</text>
</g>
<!-- c_sku_id->a_idfsk -->
<g id="edge6" class="edge">
<title>c_sku_id->a_idfsk</title>
<path fill="none" stroke="black" d="M433.651,-182.49C434.037,-171.796 434.536,-157.999 434.975,-145.871" />
<polygon fill="black" stroke="black" points="438.476,-145.881 435.34,-135.761 431.481,-145.628 438.476,-145.881" />
</g>
<!-- c_short_sku_desc -->
<g id="node7" class="node">
<title>c_short_sku_desc</title>
<polygon fill="none" stroke="black" points="272.973,-182.5 272.973,-218.5 387.027,-218.5 387.027,-182.5 272.973,-182.5" />
<text text-anchor="middle" x="330" y="-196.3" font-family="sans-serif" font-size="14.00">short_sku_desc</text>
</g>
<!-- c_short_sku_desc->a_info -->
<g id="edge5" class="edge">
<title>c_short_sku_desc->a_info</title>
<path fill="none" stroke="black" d="M337.377,-182.49C341.847,-171.58 347.639,-157.441 352.679,-145.138" />
<polygon fill="black" stroke="black" points="355.968,-146.342 356.519,-135.761 349.49,-143.688 355.968,-146.342" />
</g>
<!-- d_sku_id -->
<g id="node8" class="node">
<title>d_sku_id</title>
<polygon fill="none" stroke="black" points="579.766,-182.5 579.766,-218.5 636.234,-218.5 636.234,-182.5 579.766,-182.5" />
<text text-anchor="middle" x="608" y="-196.3" font-family="sans-serif" font-size="14.00">sku_id</text>
</g>
<!-- d_sku_id->b_fskuid -->
<g id="edge7" class="edge">
<title>d_sku_id->b_fskuid</title>
<path fill="none" stroke="black" d="M604.528,-182.49C602.467,-171.796 599.807,-157.999 597.469,-145.871" />
<polygon fill="black" stroke="black" points="600.85,-144.918 595.52,-135.761 593.976,-146.243 600.85,-144.918" />
</g>
<!-- d_sku_blurb -->
<g id="node9" class="node">
<title>d_sku_blurb</title>
<polygon fill="none" stroke="black" points="484.648,-182.5 484.648,-218.5 561.352,-218.5 561.352,-182.5 484.648,-182.5" />
<text text-anchor="middle" x="523" y="-196.3" font-family="sans-serif" font-size="14.00">sku_blurb</text>
</g>
<!-- d_sku_blurb->b_inform -->
<g id="edge8" class="edge">
<title>d_sku_blurb->b_inform</title>
<path fill="none" stroke="black" d="M522.349,-182.49C521.963,-171.796 521.464,-157.999 521.025,-145.871" />
<polygon fill="black" stroke="black" points="524.519,-145.628 520.66,-135.761 517.524,-145.881 524.519,-145.628" />
</g>
</g>
</svg>
您可以使用 MySQL Workbench 中的 Visual Explain 功能。我没有亲自使用过它，但看起来它可能比标准的 EXPLAIN 命令提供更好的洞察力。看看这个link，祝你好运！
https://dev.mysql.com/doc/workbench/en/wb-tutorial-visual-explain-dbt3.html