diff options
Diffstat (limited to 'src/include/nodes/parsenodes.h')
| -rw-r--r-- | src/include/nodes/parsenodes.h | 52 |
1 files changed, 48 insertions, 4 deletions
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index b191eaaecab..ffe155ee20e 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -197,6 +197,15 @@ typedef struct Query OnConflictExpr *onConflict; /* ON CONFLICT DO [NOTHING | UPDATE] */ + /* + * The following three fields describe the contents of the RETURNING list + * for INSERT/UPDATE/DELETE/MERGE. returningOldAlias and returningNewAlias + * are the alias names for OLD and NEW, which may be user-supplied values, + * the defaults "old" and "new", or NULL (if the default "old"/"new" is + * already in use as the alias for some other relation). + */ + char *returningOldAlias pg_node_attr(query_jumble_ignore); + char *returningNewAlias pg_node_attr(query_jumble_ignore); List *returningList; /* return-values list (of TargetEntry) */ List *groupClause; /* a list of SortGroupClause's */ @@ -1727,6 +1736,41 @@ typedef struct MergeWhenClause } MergeWhenClause; /* + * ReturningOptionKind - + * Possible kinds of option in RETURNING WITH(...) list + * + * Currently, this is used only for specifying OLD/NEW aliases. + */ +typedef enum ReturningOptionKind +{ + RETURNING_OPTION_OLD, /* specify alias for OLD in RETURNING */ + RETURNING_OPTION_NEW, /* specify alias for NEW in RETURNING */ +} ReturningOptionKind; + +/* + * ReturningOption - + * An individual option in the RETURNING WITH(...) list + */ +typedef struct ReturningOption +{ + NodeTag type; + ReturningOptionKind option; /* specified option */ + char *value; /* option's value */ + ParseLoc location; /* token location, or -1 if unknown */ +} ReturningOption; + +/* + * ReturningClause - + * List of RETURNING expressions, together with any WITH(...) options + */ +typedef struct ReturningClause +{ + NodeTag type; + List *options; /* list of ReturningOption elements */ + List *exprs; /* list of expressions to return */ +} ReturningClause; + +/* * TriggerTransition - * representation of transition row or table naming clause * @@ -2043,7 +2087,7 @@ typedef struct InsertStmt List *cols; /* optional: names of the target columns */ Node *selectStmt; /* the source SELECT/VALUES, or NULL */ OnConflictClause *onConflictClause; /* ON CONFLICT clause */ - List *returningList; /* list of expressions to return */ + ReturningClause *returningClause; /* RETURNING clause */ WithClause *withClause; /* WITH clause */ OverridingKind override; /* OVERRIDING clause */ ParseLoc stmt_location; /* start location, or -1 if unknown */ @@ -2060,7 +2104,7 @@ typedef struct DeleteStmt RangeVar *relation; /* relation to delete from */ List *usingClause; /* optional using clause for more tables */ Node *whereClause; /* qualifications */ - List *returningList; /* list of expressions to return */ + ReturningClause *returningClause; /* RETURNING clause */ WithClause *withClause; /* WITH clause */ ParseLoc stmt_location; /* start location, or -1 if unknown */ ParseLoc stmt_len; /* length in bytes; 0 means "rest of string" */ @@ -2077,7 +2121,7 @@ typedef struct UpdateStmt List *targetList; /* the target list (of ResTarget) */ Node *whereClause; /* qualifications */ List *fromClause; /* optional from clause for more tables */ - List *returningList; /* list of expressions to return */ + ReturningClause *returningClause; /* RETURNING clause */ WithClause *withClause; /* WITH clause */ ParseLoc stmt_location; /* start location, or -1 if unknown */ ParseLoc stmt_len; /* length in bytes; 0 means "rest of string" */ @@ -2094,7 +2138,7 @@ typedef struct MergeStmt Node *sourceRelation; /* source relation */ Node *joinCondition; /* join condition between source and target */ List *mergeWhenClauses; /* list of MergeWhenClause(es) */ - List *returningList; /* list of expressions to return */ + ReturningClause *returningClause; /* RETURNING clause */ WithClause *withClause; /* WITH clause */ ParseLoc stmt_location; /* start location, or -1 if unknown */ ParseLoc stmt_len; /* length in bytes; 0 means "rest of string" */ |