Enhance DOI handling in welearn_document with new queries and updates

Author: lpi-tn

populate/document_related.welearn_document.doi.sql

@@ -1,2 +1,49 @@
--- SHOW 
-SELECT details ->> 'doi'
+-- Show a sample of DOI
+SELECT wd.details->> 'doi' AS "VIRTUAL DOI", * FROM document_related.welearn_document wd WHERE wd.details ->> 'doi' IS NOT NULL LIMIT 10
+
+-- Count the quantity of DOI (Very long query)
+SELECT COUNT(1) FROM document_related.welearn_document wd WHERE wd.details ->> 'doi' IS NOT NULL
+
+
+SELECT details ->> 'doi' FROM document_related.welearn_document wd LIMIT 1
+
+SELECT * FROM alembic_version av -- b049924f7067
+
+-- Update only one row
+UPDATE
+	document_related.welearn_document
+SET
+	doi = (details ->> 'doi')
+WHERE
+	id = 'efb2c5d7-4ceb-4022-8fa2-60eac50057b4'
+	AND
+	EXISTS (
+	SELECT
+		1
+	FROM
+		alembic_version
+	WHERE
+		version_num = 'f1ce0ad2845b')
+
+-- Show this row
+SELECT
+	*
+FROM
+	document_related.welearn_document wd
+WHERE
+	id = 'efb2c5d7-4ceb-4022-8fa2-60eac50057b4'
+	
+	
+-- Update all
+UPDATE
+	document_related.welearn_document
+SET
+	doi = (details ->> 'doi')
+WHERE
+	EXISTS (
+	SELECT
+		1
+	FROM
+		alembic_version
+	WHERE
+		version_num = 'f1ce0ad2845b')