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| author | Peter Eisentraut <peter_e@gmx.net> | 2017-04-06 08:33:16 -0400 |
|---|---|---|
| committer | Peter Eisentraut <peter_e@gmx.net> | 2017-04-06 08:41:37 -0400 |
| commit | 3217327053638085d24dd4d276e7c1f7ac2c4c6b (patch) | |
| tree | 513d1264a2935b05e28b0d8322d73a0411a3d02f /src/backend/executor/execExpr.c | |
| parent | 6bad580d9e678a0b604883e14d8401d469b06566 (diff) | |
| download | postgresql-3217327053638085d24dd4d276e7c1f7ac2c4c6b.tar.gz postgresql-3217327053638085d24dd4d276e7c1f7ac2c4c6b.zip | |
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 <vitaly.burovoy@gmail.com>
Diffstat (limited to 'src/backend/executor/execExpr.c')
| -rw-r--r-- | src/backend/executor/execExpr.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/backend/executor/execExpr.c b/src/backend/executor/execExpr.c index 5a84742d149..cd0dce150d6 100644 --- a/src/backend/executor/execExpr.c +++ b/src/backend/executor/execExpr.c @@ -1993,6 +1993,18 @@ ExecInitExprRec(Expr *node, PlanState *parent, ExprState *state, break; } + case T_NextValueExpr: + { + NextValueExpr *nve = (NextValueExpr *) node; + + scratch.opcode = EEOP_NEXTVALUEEXPR; + scratch.d.nextvalueexpr.seqid = nve->seqid; + scratch.d.nextvalueexpr.seqtypid = nve->typeId; + + ExprEvalPushStep(state, &scratch); + break; + } + default: elog(ERROR, "unrecognized node type: %d", (int) nodeTag(node)); |