Identity columns

This is the SQL standard-conforming variant of PostgreSQL's serial
columns.  It fixes a few usability issues that serial columns have:

- CREATE TABLE / LIKE copies default but refers to same sequence
- cannot add/drop serialness with ALTER TABLE
- dropping default does not drop sequence
- need to grant separate privileges to sequence
- other slight weirdnesses because serial is some kind of special macro

Reviewed-by: Vitaly Burovoy <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c
index 83fb39fe187..13672979b41 100644
--- a/src/backend/nodes/outfuncs.c
+++ b/src/backend/nodes/outfuncs.c
@@ -2763,6 +2763,7 @@ _outColumnDef(StringInfo str, const ColumnDef *node)
 	WRITE_CHAR_FIELD(storage);
 	WRITE_NODE_FIELD(raw_default);
 	WRITE_NODE_FIELD(cooked_default);
+	WRITE_CHAR_FIELD(identity);
 	WRITE_NODE_FIELD(collClause);
 	WRITE_OID_FIELD(collOid);
 	WRITE_NODE_FIELD(constraints);
@@ -2868,6 +2869,7 @@ _outQuery(StringInfo str, const Query *node)
 	WRITE_NODE_FIELD(rtable);
 	WRITE_NODE_FIELD(jointree);
 	WRITE_NODE_FIELD(targetList);
+	WRITE_ENUM_FIELD(override, OverridingKind);
 	WRITE_NODE_FIELD(onConflict);
 	WRITE_NODE_FIELD(returningList);
 	WRITE_NODE_FIELD(groupClause);
@@ -3405,6 +3407,13 @@ _outConstraint(StringInfo str, const Constraint *node)
 			WRITE_STRING_FIELD(cooked_expr);
 			break;
 
+		case CONSTR_IDENTITY:
+			appendStringInfoString(str, "IDENTITY");
+			WRITE_NODE_FIELD(raw_expr);
+			WRITE_STRING_FIELD(cooked_expr);
+			WRITE_CHAR_FIELD(generated_when);
+			break;
+
 		case CONSTR_CHECK:
 			appendStringInfoString(str, "CHECK");
 			WRITE_BOOL_FIELD(is_no_inherit);