comments on columns

Show the comments in the list of columns of a table.
Generate SQL to set them.

pglab/widgets/CatalogTablesPage.cpp

@@ -11,6 +11,7 @@
 #include "TablesTableModel.h"
 #include "TriggerPage.h"
 #include "SqlFormattingUtils.h"
+#include "catalog/PgAttributeContainer.h"
 #include "catalog/PgIndexContainer.h"
 #include "catalog/PgTriggerContainer.h"
 #include "widgets/CatalogConstraintPage.h"
@@ -218,6 +219,15 @@ void CatalogTablesPage::updateSqlTab(const std::optional<PgClass> &table)
         create_sql += "COMMENT ON TABLE " + table->fullyQualifiedQuotedObjectName()
                 + " IS " + dollarQuoteString(table->description) + ";\n";
     }
+
+    auto && cols = m_catalog->attributes()->getColumnsForRelation(table->oid());
+    for (auto && col : cols) {
+        if (!col.description.isEmpty()) {
+            create_sql += "COMMENT ON COLUMN " + table->fullyQualifiedQuotedObjectName()
+                    + "." + quoteIdent(col.name) + " IS " + dollarQuoteString(col.description) + ";\n";
+        }
+    }
+
     //
 	m_tableSql->setPlainText(drop_sql % "\n\n" % create_sql);
 }