new file: Julia/fitsDBNULL.jl

Julia/fitsDBNULL.jl

@@ -0,0 +1,32 @@
+using LibPQ, Tables
+using ProgressMeter
+
+function connect_db(db_name)
+    user = String(UInt8.([106])) * String(UInt8.([118])) * String(UInt8.([111]))
+    password = user * String(UInt8.([33]))
+    # host = "jvof"
+    host = "jvox.vo.nao.ac.jp"
+
+    url = "postgresql://" * user
+
+    if password != ""
+        url *= ":" * password
+    end
+
+    url *= "@" * host
+    url *= "/" * db_name
+
+    return LibPQ.Connection(url)
+end
+
+function get_datasets(conn, threshold)
+    # threshold is given in GB
+
+    # above the threshold
+    strSQL = "select dataset_id, file_size, path from cube where binf1=1 and binf2=1 and binf3=1 and binf4=1 and file_size>=$(threshold)*1024*1024*1024. order by file_size desc;"
+
+    res = execute(conn, strSQL)
+    data = columntable(res)
+
+    return data
+end