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| author | Peter Eisentraut <peter@eisentraut.org> | 2021-02-01 13:54:59 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2021-02-01 14:32:51 +0100 |
| commit | 3696a600e2292d43c00949ddf0352e4ebb487e5b (patch) | |
| tree | 11f19c8c9e5757c44b8da02d0e1f7b41f8ec5f13 /src/include/parser/parse_node.h | |
| parent | bb513b364b4fe31574574c8d0afbb2255268b321 (diff) | |
| download | postgresql-3696a600e2292d43c00949ddf0352e4ebb487e5b.tar.gz postgresql-3696a600e2292d43c00949ddf0352e4ebb487e5b.zip | |
SEARCH and CYCLE clauses
This adds the SQL standard feature that adds the SEARCH and CYCLE
clauses to recursive queries to be able to do produce breadth- or
depth-first search orders and detect cycles. These clauses can be
rewritten into queries using existing syntax, and that is what this
patch does in the rewriter.
Reviewed-by: Vik Fearing <vik@postgresfriends.org>
Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/db80ceee-6f97-9b4a-8ee8-3ba0c58e5be2@2ndquadrant.com
Diffstat (limited to 'src/include/parser/parse_node.h')
| -rw-r--r-- | src/include/parser/parse_node.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/parser/parse_node.h b/src/include/parser/parse_node.h index dfc214b06fb..176b9f37c1f 100644 --- a/src/include/parser/parse_node.h +++ b/src/include/parser/parse_node.h @@ -78,6 +78,7 @@ typedef enum ParseExprKind EXPR_KIND_CALL_ARGUMENT, /* procedure argument in CALL */ EXPR_KIND_COPY_WHERE, /* WHERE condition in COPY FROM */ EXPR_KIND_GENERATED_COLUMN, /* generation expression for a column */ + EXPR_KIND_CYCLE_MARK, /* cycle mark value */ } ParseExprKind; @@ -294,6 +295,7 @@ struct ParseNamespaceColumn Oid p_varcollid; /* OID of collation, or InvalidOid */ Index p_varnosyn; /* rangetable index of syntactic referent */ AttrNumber p_varattnosyn; /* attribute number of syntactic referent */ + bool p_dontexpand; /* not included in star expansion */ }; /* Support for parser_errposition_callback function */ |