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--- v5:userguide:learn_dictionary:metacolumns [2016/03/17 00:01] – mnewnham
+++ v5:userguide:learn_dictionary:metacolumns [2016/03/17 00:16] – mnewnham
@@ Line 1: / Line 1: @@
-<- v5:userguide:learn_dictionary:metatypes|MetaTypes ^ v5:userguide:learn_dictionary:start_lesson|Start Of Lesson ^ v5:userguide:learn_dictionary:metatables|MetaTables ->
+<- v5:userguide:learn_dictionary:metatypes|MetaTypes ^ v5:userguide:learn_dictionary:start_lesson|Start Of Lesson ^ v5:userguide:learn_dictionary:other_metafunctions|Other MetaFunctions ->
 ~~NOTOC~~
 ====== MetaColumns ======
@@ Line 30: / Line 30: @@
 ===== Extended Attributes =====
-Some drivers return an extended set of attributes that represent DBMS specific functionality. If you are writing portable applications you should not rely on these attributes to be available across all databases.
+Some drivers return an extended set of attributes that represent DBMS specific functionality. For example, the IBM DB2 driver returns the normal 3 attributes above plus the following 3:
+  [not_null] =>
+  [scale] =>
+  [primary_key] =>
+If you are writing portable applications you should not rely on these attributes to be available across all databases.
 ===== metaColumnNames =====
-This method returns just the column names from the table.
+This method [[v5:dictionary:metacolumnnames|metaColumnNames()]] returns just the column names from the table.
+<code php>
+$ar = $db->metaColumnNames('test');
+print_r($ar);
+/*
+ * Returns:
+COLUMN_1=>column_1,
+COLUMN_2=>column_2,
+COLUMN_3=>column_3
+*/
+</code>