Figure out references

script/sql/create/10.status.sql

@@ -9,3 +9,5 @@ create table status
 , setting numeric
 , check (status is not null or setting is not null)
 );
+
+-- ddelete when delete link

script/sql/create/15.energy.sql

@@ -19,14 +19,20 @@ create table energy_pump_price
 , price numeric not null
 );
 
+-- delete when delete pump
+
 create table energy_pump_pattern
 (
   pump varchar(32) primary key references pumps(id) not null
 , pattern varchar(32) references _pattern(id) not null
 );
 
+-- delete when delete pump
+
 create table energy_pump_effic
 (
   pump varchar(32) primary key references pumps(id) not null
 , effic varchar(32) references _curve(id) not null
 );
+
+-- delete when delete pump

script/sql/create/16.emitters.sql

@@ -5,3 +5,5 @@ create table emitters
   junction varchar(32) primary key references junctions(id)
 , coefficient numeric not null
 );
+
+-- delete when delete junction

script/sql/create/17.quality.sql

@@ -5,3 +5,5 @@ create table quality
   node varchar(32) primary key references _node(id)
 , quality numeric not null
 );
+
+-- delete when delete ndoe

script/sql/create/18.sources.sql

@@ -9,3 +9,6 @@ create table sources
 , strength numeric not null
 , pattern varchar(32) references _pattern(id)
 );
+
+-- delete when delete node
+-- unset pattern when delete pattern

script/sql/create/19.reactions.sql

@@ -22,14 +22,20 @@ create table reactions_pipe_bulk
 , value numeric not null
 );
 
+-- delete when delete pipe
+
 create table reactions_pipe_wall
 (
   pipe  varchar(32) primary key references pipes(id) not null
 , value numeric not null
 );
 
+-- delete when delete pipe
+
 create table reactions_tank
 (
   tank  varchar(32) primary key references tanks(id) not null
 , value numeric not null
 );
+
+-- delete when delete tank

script/sql/create/2.junctions.sql

@@ -7,3 +7,5 @@ create table junctions
 , demand numeric
 , pattern varchar(32) references _pattern(id)
 );
+
+-- unset pattern when delete pattern

script/sql/create/20.mixing.sql

@@ -8,3 +8,5 @@ create table mixing
 , model mixing_model not null
 , value numeric
 );
+
+-- delete when delete tank

script/sql/create/24.coordinates.sql

@@ -6,5 +6,7 @@ create table coordinates
 , coord point not null
 );
 
+-- delete when delete node
+
 create index coordinates_spgist on coordinates using spgist(coord);
 create index coordinates_gist on coordinates using gist(coord);

script/sql/create/25.vertices.sql

@@ -7,3 +7,5 @@ create table vertices
 , x    numeric not null
 , y    numeric not null
 );
+
+-- delete when delete link

script/sql/create/26.labels.sql

@@ -8,3 +8,5 @@ create table labels
 , node varchar(32) references _node(id)
 , primary key (x, y)
 );
+
+-- unset node when delete node

script/sql/create/3.reservoirs.sql

@@ -6,3 +6,5 @@ create table reservoirs
 , head numeric not null
 , pattern varchar(32) references _pattern(id)
 );
+
+-- unset pattern when delete pattern

script/sql/create/4.tanks.sql

@@ -14,3 +14,5 @@ create table tanks
 , vol_curve varchar(32) references _curve(id)
 , overflow tanks_overflow
 );
+
+-- unset vol_curve when delete curve

script/sql/create/5.pipes.sql

@@ -14,3 +14,6 @@ create table pipes
 , status pipes_status not null
 , check (node1 <> node2)
 );
+
+-- delete when delete node1
+-- delete when delete node2

script/sql/create/6.pumps.sql

@@ -12,3 +12,8 @@ create table pumps
 , check (power is not null or head is not null)
 , check ((power is not null and head is not null) is false)
 );
+
+-- delete when delete node1
+-- delete when delete node2
+-- unset head when delete curve
+-- unset pattern when delete pattern

script/sql/create/7.valves.sql

@@ -12,3 +12,6 @@ create table valves
 , setting numeric not null
 , minor_loss numeric not null
 );
+
+-- delete when delete node1
+-- delete when delete node2

script/sql/create/8.tags.sql

@@ -6,8 +6,12 @@ create table tags_node
 , tag text not null
 );
 
+-- delete when delete node
+
 create table tags_link
 (
   id varchar(32) primary key references _link(id)
 , tag text not null
 );
+
+-- delete when delete link

script/sql/create/9.demands.sql

@@ -8,3 +8,6 @@ create table demands
 , pattern varchar(32) references _pattern(id)
 , category text
 );
+
+-- delete when delete junction
+-- unset pattern when delete pattern