Do not force constraint validation by setting them as 'not valid'

Author: madtibo

sql/PostLinks_fk.sql

@@ -1,5 +1,11 @@
--- impossible to enforce so set NULL
-UPDATE Postlinks SET postid=NULL WHERE postid NOT IN (SELECT DISTINCT id FROM Posts);
-ALTER TABLE Postlinks ADD CONSTRAINT fk_postlinks_postid FOREIGN KEY (postid) REFERENCES posts (id);
-UPDATE Postlinks SET relatedpostid=NULL WHERE relatedpostid NOT IN (SELECT DISTINCT id FROM Posts);
-ALTER TABLE Postlinks ADD CONSTRAINT fk_postlinks_relatedpostid FOREIGN KEY (relatedpostid) REFERENCES posts (id);
+-- impossible to enforce these constraints, set as 'not valid' to disable
+-- initial test.
+--
+-- These constaints can be forced running the following queries:
+-- UPDATE Postlinks SET postid=NULL WHERE postid NOT IN (SELECT DISTINCT id FROM Posts);
+-- ALTER TABLE Postlinks VALIDATE CONSTRAINT fk_postlinks_postid;
+--UPDATE Postlinks SET relatedpostid=NULL WHERE relatedpostid NOT IN (SELECT DISTINCT id FROM Posts);
+-- ALTER TABLE Postlinks VALIDATE CONSTRAINT fk_postlinks_relatedpostid;
+--
+ALTER TABLE Postlinks ADD CONSTRAINT fk_postlinks_postid FOREIGN KEY (postid) REFERENCES posts (id) NOT VALID;
+ALTER TABLE Postlinks ADD CONSTRAINT fk_postlinks_relatedpostid FOREIGN KEY (relatedpostid) REFERENCES posts (id) NOT VALID;

sql/Votes_fk.sql

@@ -1,4 +1,9 @@
 ALTER TABLE Votes ADD CONSTRAINT fk_votes_userid FOREIGN KEY (userid) REFERENCES users (id);
--- impossible to enforce so set NULL
-UPDATE Votes SET postid=NULL WHERE postid NOT IN (SELECT DISTINCT id FROM Posts);
+-- impossible to enforce this constraint, set as 'not valid' to disable
+-- initial test.
+--
+-- This constaint can be forced running the following queries:
+-- UPDATE Votes SET postid=NULL WHERE postid NOT IN (SELECT DISTINCT id FROM Posts);
+-- ALTER TABLE Botes VALIDATE CONSTRAINT fk_votes_postid;
+--
 ALTER TABLE Votes ADD CONSTRAINT fk_votes_postid FOREIGN KEY (postid) REFERENCES posts (id);