@@ -76,25 +76,25 @@ insert into grandparent
7676values
7777 (1, 'Elizabeth');
7878ERROR: duplicate key value violates unique constraint "grandparent_pkey"
79- DETAIL: Key (id)=('1' ) already exists.
79+ DETAIL: Key (id)=(1 ) already exists.
8080insert into parent
8181 (id, name, parent_id)
8282values
8383 (1, 'Charles', 1);
8484ERROR: duplicate key value violates unique constraint "parent_pkey"
85- DETAIL: Key (id)=('1' ) already exists.
85+ DETAIL: Key (id)=(1 ) already exists.
8686insert into parent
8787 (id, name, parent_id)
8888values
8989 (2, 'Diana', 1);
9090ERROR: duplicate key value violates unique constraint "parent_pkey"
91- DETAIL: Key (id)=('2' ) already exists.
91+ DETAIL: Key (id)=(2 ) already exists.
9292insert into child
9393 (id, name, father)
9494values
9595 (1, 'William', 1);
9696ERROR: duplicate key value violates unique constraint "child_pkey"
97- DETAIL: Key (id)=('1' ) already exists.
97+ DETAIL: Key (id)=(1 ) already exists.
9898alter table child
9999drop constraint child_father_fkey;
100100alter table child
@@ -126,25 +126,25 @@ insert into grandparent
126126values
127127 (1, 'Elizabeth');
128128ERROR: duplicate key value violates unique constraint "grandparent_pkey"
129- DETAIL: Key (id)=('1' ) already exists.
129+ DETAIL: Key (id)=(1 ) already exists.
130130insert into parent
131131 (id, name, parent_id)
132132values
133133 (1, 'Charles', 1);
134134ERROR: duplicate key value violates unique constraint "parent_pkey"
135- DETAIL: Key (id)=('1' ) already exists.
135+ DETAIL: Key (id)=(1 ) already exists.
136136insert into parent
137137 (id, name, parent_id)
138138values
139139 (2, 'Diana', 1);
140140ERROR: duplicate key value violates unique constraint "parent_pkey"
141- DETAIL: Key (id)=('2' ) already exists.
141+ DETAIL: Key (id)=(2 ) already exists.
142142insert into child
143143 (id, name, father)
144144values
145145 (1, 'William', 1);
146146ERROR: duplicate key value violates unique constraint "child_pkey"
147- DETAIL: Key (id)=('1' ) already exists.
147+ DETAIL: Key (id)=(1 ) already exists.
148148alter table child
149149drop constraint child_father_fkey;
150150alter table child
@@ -176,25 +176,25 @@ insert into grandparent
176176values
177177 (1, 'Elizabeth');
178178ERROR: duplicate key value violates unique constraint "grandparent_pkey"
179- DETAIL: Key (id)=('1' ) already exists.
179+ DETAIL: Key (id)=(1 ) already exists.
180180insert into parent
181181 (id, name, parent_id)
182182values
183183 (1, 'Charles', 1);
184184ERROR: duplicate key value violates unique constraint "parent_pkey"
185- DETAIL: Key (id)=('1' ) already exists.
185+ DETAIL: Key (id)=(1 ) already exists.
186186insert into parent
187187 (id, name, parent_id)
188188values
189189 (2, 'Diana', 1);
190190ERROR: duplicate key value violates unique constraint "parent_pkey"
191- DETAIL: Key (id)=('2' ) already exists.
191+ DETAIL: Key (id)=(2 ) already exists.
192192insert into child
193193 (id, name, father)
194194values
195195 (1, 'William', 1);
196196ERROR: duplicate key value violates unique constraint "child_pkey"
197- DETAIL: Key (id)=('1' ) already exists.
197+ DETAIL: Key (id)=(1 ) already exists.
198198alter table child
199199add column mother integer references parent (id)
200200 on delete cascade;
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