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B4A/Subs.bas

@@ -814,4 +814,25 @@ Sub revisaimpreso (cliente As String) As Boolean
 		yaimpreso = True
 	End If
 	Return yaimpreso
+End Sub
+
+'Agrega una columna a la tabla especificada.
+'Hay que indicar el "tipo"  de la columna (TEXT, INTEGER, ETC)
+'Ej. agregaColumna(DB, "TABLA", "COLUMNA", "TIPO")
+Sub agregaColumna(db As SQL, tabla As String, columna As String, tipo As String) 'ignore
+	Try 'Intentamos usar "pragma_table_info" para revisar si existe la columna en la tabla
+		Private c As Cursor = db.ExecQuery($"SELECT COUNT(*) AS fCol FROM pragma_table_info('${tabla}') WHERE name='${columna}'"$)
+		c.Position = 0
+		If c.GetString("fCol") = 0 Then 'Si no esta la columna la agregamos
+			db.ExecNonQuery($"ALTER TABLE ${tabla} ADD COLUMN ${columna} ${tipo}"$)
+			Log($"Columna "${columna} ${tipo}", agregada a "${tabla}"."$)
+		End If
+	Catch 'Si no funciona "pragma_table_info" lo hacemos con try/catch
+		Try
+			db.ExecNonQuery($"ALTER TABLE ${tabla} ADD COLUMN ${columna} ${tipo}"$)
+			Log($"Columna "${columna} ${tipo}", agregada a "${tabla}".."$)
+		Catch
+			Log(LastException)
+		End Try
+	End Try
 End Sub