work on optimising vcenter queries

db/queries/query.sql.go

@@ -876,6 +876,32 @@ func (q *Queries) ListUnprocessedEvents(ctx context.Context, eventtime sql.NullI
 	return items, nil
 }
 
+const sqliteColumnExists = `-- name: SqliteColumnExists :one
+SELECT COUNT(1) AS count
+FROM pragma_table_info
+WHERE name = ?1
+`
+
+func (q *Queries) SqliteColumnExists(ctx context.Context, columnName sql.NullString) (int64, error) {
+	row := q.db.QueryRowContext(ctx, sqliteColumnExists, columnName)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
+const sqliteTableExists = `-- name: SqliteTableExists :one
+SELECT COUNT(1) AS count
+FROM sqlite_master
+WHERE type = 'table' AND name = ?1
+`
+
+func (q *Queries) SqliteTableExists(ctx context.Context, tableName sql.NullString) (int64, error) {
+	row := q.db.QueryRowContext(ctx, sqliteTableExists, tableName)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
 const updateEventsProcessed = `-- name: UpdateEventsProcessed :exec
 UPDATE events
 SET "Processed" = 1