Skip to content

Commit c1b4bd6

Browse files
efritzefritz
committed
WIP.
1 parent 0240eb4 commit c1b4bd6

File tree

4 files changed

+479
-0
lines changed

4 files changed

+479
-0
lines changed

‎assets/css/main.css‎

Lines changed: 22 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -598,3 +598,25 @@ img[alt=mitel] {
598598
.articles article:hover {
599599
background-color: #dbeaf0;
600600
}
601+
602+
/* Article-specific styles
603+
* --------------------------------------------*/
604+
605+
.schema-design-nosql table {
606+
border-collapse: collapse;
607+
}
608+
609+
.schema-design-nosql table p {
610+
margin: 0;
611+
}
612+
613+
.schema-design-nosql table th,
614+
.schema-design-nosql table td {
615+
padding: 5px;
616+
border: 1px solid #abafb3;
617+
}
618+
619+
.schema-design-nosql table td:nth-child(1),
620+
.schema-design-nosql table td:nth-child(2) {
621+
white-space: nowrap;
622+
}

‎content/articles/2020-01-02-schema-design-part-1.md‎

Lines changed: 180 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,180 @@
1+
+++
2+
title = "Schema Design - Part 1: Trigger-based SQL"
3+
slug = "schema-design-sql"
4+
date = "2020-01-02T00:00:00-00:00"
5+
tags = ["schema-design", "sql"]
6+
showpagemeta = true
7+
+++
8+
9+
TODO
10+
11+
## Deposition
12+
13+
TODO
14+
15+
[earlier post](https://eric-fritz.com/articles/deposition/)
16+
17+
[earlier post](https://eric-fritz.com/articles/easy-peasy-sql-audit-tables/)
18+
19+
20+
{{< lightbox src="/images/deposition-schema.png" anchor="deposition-schema" >}}
21+
22+
TODO - After insert, update, delete on builds:
23+
24+
```sql
25+
CREATE FUNCTION update_product(
26+
target_team_id integer, target_name text
27+
) RETURNS void LANGUAGE plpgsql AS $$ BEGIN
28+
UPDATE products p
29+
SET
30+
active = ep.active,
31+
deployed = ep.deployed,
32+
flagged = ep.flagged,
33+
active_flagged = ep.active_flagged,
34+
deploy_flagged = ep.deploy_flagged
35+
FROM expanded_products ep
36+
WHERE
37+
ep.team_id = target_team_id AND p.team_id = target_team_id AND
38+
ep.name = target_name AND p.name = target_name;
39+
END $$;
40+
41+
CREATE VIEW expanded_products AS
42+
SELECT
43+
p.team_id,
44+
p.name,
45+
COALESCE(bool_or(b.active), false) AS active,
46+
COALESCE(bool_or(b.deployed), false) AS deployed,
47+
COALESCE(bool_or(b.flagged), false) AS flagged,
48+
COALESCE(bool_or((b.active AND b.flagged)), false) AS active_flagged,
49+
COALESCE(bool_or((b.deployed AND b.flagged)), false) AS deploy_flagged
50+
FROM products p
51+
LEFT JOIN builds b ON ...
52+
GROUP BY p.team_id, p.name;
53+
```
54+
55+
TODO / After insert on builds, insert/delte on build deployments
56+
57+
```sql
58+
CREATE FUNCTION set_active_build(
59+
target_team_id integer, target_name text
60+
) RETURNS void LANGUAGE plpgsql AS $$ BEGIN
61+
UPDATE builds b
62+
SET active = EXISTS (
63+
SELECT 1 FROM build_deployments d WHERE
64+
d.build_product_name = b.product_name AND
65+
d.build_version = b.version AND
66+
d.build_token = b.build_token
67+
) OR EXISTS (
68+
SELECT 1 FROM active_builds ab WHERE
69+
b.product_name = ab.product_name AND
70+
b.version = ab.version AND
71+
b.build_token = ab.build_token
72+
)
73+
WHERE
74+
b.product_team_id = target_team_id AND
75+
b.product_name = target_name;
76+
END $$;
77+
78+
CREATE VIEW active_builds AS
79+
SELECT b.* FROM products p JOIN builds b
80+
ON ...
81+
AND NOT EXISTS (
82+
SELECT 1 FROM builds cmp WHERE
83+
cmp.product_team_id = p.team_id AND cmp.product_name = p.name AND
84+
cmp.build_datetime > b.build_datetime
85+
)
86+
ORDER BY b.build_datetime DESC;
87+
```
88+
89+
TODO / After insert, delete on build_deployments
90+
91+
```sql
92+
CREATE FUNCTION update_build_deployment(
93+
target_team_id integer, target_name text,
94+
target_version text, target_build_token text
95+
) RETURNS void LANGUAGE plpgsql AS $$ BEGIN
96+
UPDATE builds b
97+
SET deployed = bd.deployed
98+
FROM expanded_build_deployments bd
99+
WHERE
100+
bd.product_team_id = target_team_id AND b.product_team_id = target_team_id AND
101+
bd.product_name = target_name AND b.product_name = target_name AND
102+
bd.version = target_version AND b.version = target_version AND
103+
bd.build_token = target_build_token AND b.build_token = target_build_token;
104+
END $$;
105+
106+
CREATE VIEW expanded_build_deployments AS
107+
SELECT
108+
b.product_team_id,
109+
b.product_name,
110+
b.version,
111+
b.build_token,
112+
(count(bd.deployment_token) > 0) AS deployed
113+
FROM builds b
114+
LEFT JOIN build_deployments bd ON ...
115+
GROUP BY b.product_team_id, b.product_name, b.version, b.build_token;
116+
```
117+
118+
TODO / After insert/update/delete on dependency_versions and dependency_version_flags
119+
120+
```sql
121+
CREATE FUNCTION update_dependencies(
122+
target_source text, target_name text
123+
) RETURNS void LANGUAGE plpgsql AS $$ BEGIN
124+
UPDATE dependencies d
125+
SET flagged = ed.flagged
126+
FROM expanded_dependencies ed
127+
WHERE
128+
ed.source = target_source AND d.source = target_source AND
129+
ed.name = target_name AND d.name = target_name;
130+
END $$;
131+
132+
CREATE VIEW expanded_dependencies AS
133+
SELECT
134+
d.source,
135+
d.name,
136+
EXISTS (
137+
SELECT 1 FROM dependency_version_flags dvf WHERE
138+
d.source = dvf.dependency_version_source AND
139+
d.name = dvf.dependency_version_name
140+
) AS flagged
141+
FROM dependencies d;
142+
```
143+
144+
TODO / After insert/update/delete on dependency_version_flags
145+
146+
```sql
147+
CREATE FUNCTION update_build(
148+
target_team_id integer, target_name text,
149+
target_version text, target_build_token text
150+
) RETURNS void LANGUAGE plpgsql AS $$ DECLARE items RECORD; BEGIN
151+
UPDATE builds b
152+
SET flagged = eb.flagged
153+
FROM expanded_builds eb
154+
WHERE
155+
eb.product_team_id = target_team_id AND b.product_team_id = target_team_id AND
156+
eb.product_name = target_name AND b.product_name = target_name AND
157+
eb.version = target_version AND b.version = target_version AND
158+
eb.build_token = target_build_token AND b.build_token = target_build_token;
159+
END $$;
160+
161+
CREATE VIEW expanded_builds AS
162+
SELECT
163+
b.product_team_id,
164+
b.product_name,
165+
b.version,
166+
b.build_token,
167+
(count(DISTINCT dvf.dependency_version_flag_id) > 0) AS flagged
168+
FROM
169+
(
170+
builds b
171+
LEFT JOIN build_dependency_versions bdv ON ...
172+
LEFT JOIN dependency_versions v ON ...
173+
LEFT JOIN dependency_version_flags dvf ON
174+
... AND
175+
(dvf.apply_globally OR dvf.team_id = b.product_team_id)
176+
)
177+
GROUP BY b.product_team_id, b.product_name, b.version, b.build_token;
178+
```
179+
180+
TODO

‎content/articles/2020-01-02-schema-design-part-2.md‎

Lines changed: 15 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,15 @@
1+
+++
2+
title = "Schema Design - Part 2: SQL-Based Document Store"
3+
slug = "schema-design-document-store"
4+
date = "2020-01-02T00:00:00-00:00"
5+
tags = ["schema-design", "sql"]
6+
showpagemeta = true
7+
+++
8+
9+
TODO
10+
11+
## LSIF Server
12+
13+
TODO
14+
15+
{{< lightbox src="/images/lsif-schema.png" anchor="lsif-schema" >}}

0 commit comments

Comments
 (0)