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Identity columns

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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 <vitaly.burovoy@gmail.com>
This commit is contained in:
Peter Eisentraut
2017-04-06 08:33:16 -04:00
parent 6bad580d9e
commit 3217327053
57 changed files with 2140 additions and 202 deletions
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18
src/backend/nodes/equalfuncs.c
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@@ -733,6 +733,15 @@ _equalCurrentOfExpr(const CurrentOfExpr *a, const CurrentOfExpr *b)
return true;
}
static bool
_equalNextValueExpr(const NextValueExpr *a, const NextValueExpr *b)
{
COMPARE_SCALAR_FIELD(seqid);
COMPARE_SCALAR_FIELD(typeId);
return true;
}
static bool
_equalInferenceElem(const InferenceElem *a, const InferenceElem *b)
{
@@ -963,6 +972,7 @@ _equalQuery(const Query *a, const Query *b)
COMPARE_NODE_FIELD(rtable);
COMPARE_NODE_FIELD(jointree);
COMPARE_NODE_FIELD(targetList);
COMPARE_SCALAR_FIELD(override);
COMPARE_NODE_FIELD(onConflict);
COMPARE_NODE_FIELD(returningList);
COMPARE_NODE_FIELD(groupClause);
@@ -1002,6 +1012,7 @@ _equalInsertStmt(const InsertStmt *a, const InsertStmt *b)
COMPARE_NODE_FIELD(onConflictClause);
COMPARE_NODE_FIELD(returningList);
COMPARE_NODE_FIELD(withClause);
COMPARE_SCALAR_FIELD(override);
return true;
}
@@ -1713,6 +1724,7 @@ _equalCreateSeqStmt(const CreateSeqStmt *a, const CreateSeqStmt *b)
COMPARE_NODE_FIELD(sequence);
COMPARE_NODE_FIELD(options);
COMPARE_SCALAR_FIELD(ownerId);
COMPARE_SCALAR_FIELD(for_identity);
COMPARE_SCALAR_FIELD(if_not_exists);
return true;
@@ -1723,6 +1735,7 @@ _equalAlterSeqStmt(const AlterSeqStmt *a, const AlterSeqStmt *b)
{
COMPARE_NODE_FIELD(sequence);
COMPARE_NODE_FIELD(options);
COMPARE_SCALAR_FIELD(for_identity);
COMPARE_SCALAR_FIELD(missing_ok);
return true;
@@ -2530,6 +2543,7 @@ _equalColumnDef(const ColumnDef *a, const ColumnDef *b)
COMPARE_SCALAR_FIELD(storage);
COMPARE_NODE_FIELD(raw_default);
COMPARE_NODE_FIELD(cooked_default);
COMPARE_SCALAR_FIELD(identity);
COMPARE_NODE_FIELD(collClause);
COMPARE_SCALAR_FIELD(collOid);
COMPARE_NODE_FIELD(constraints);
@@ -2550,6 +2564,7 @@ _equalConstraint(const Constraint *a, const Constraint *b)
COMPARE_SCALAR_FIELD(is_no_inherit);
COMPARE_NODE_FIELD(raw_expr);
COMPARE_STRING_FIELD(cooked_expr);
COMPARE_SCALAR_FIELD(generated_when);
COMPARE_NODE_FIELD(keys);
COMPARE_NODE_FIELD(exclusions);
COMPARE_NODE_FIELD(options);
@@ -3099,6 +3114,9 @@ equal(const void *a, const void *b)
case T_CurrentOfExpr:
retval = _equalCurrentOfExpr(a, b);
break;
case T_NextValueExpr:
retval = _equalNextValueExpr(a, b);
break;
case T_InferenceElem:
retval = _equalInferenceElem(a, b);
break;