database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-08 11:42:09 +03:00
Code Activity

PLAN clauses for JSON_TABLE

Browse Source 
These clauses allow the user to specify how data from nested paths are
joined, allowing considerable freedom in shaping the tabular output of
JSON_TABLE.

PLAN DEFAULT allows the user to specify the global strategies when
dealing with sibling or child nested paths. The is often sufficient to
achieve the necessary goal, and is considerably simpler than the full
PLAN clause, which allows the user to specify the strategy to be used
for each named nested path.

Nikita Glukhov

Reviewers have included (in no particular order) Andres Freund, Alexander
Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zhihong Yu,
Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby.

Discussion: https://postgr.es/m/7e2cb85d-24cf-4abb-30a5-1a33715959bd@postgrespro.ru
This commit is contained in:
Andrew Dunstan
2022-04-05 14:09:04 -04:00
parent e83ebfe6d7
commit fadb48b00e
17 changed files with 1622 additions and 117 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/backend/nodes/makefuncs.c
View File

@ -867,6 +867,25 @@ makeJsonBehavior(JsonBehaviorType type, Node *default_expr)
return behavior;
}
/*
* makeJsonTableJoinedPlan -
* creates a joined JsonTablePlan node
*/
Node *
makeJsonTableJoinedPlan(JsonTablePlanJoinType type, Node *plan1, Node *plan2,
int location)
{
JsonTablePlan *n = makeNode(JsonTablePlan);
n->plan_type = JSTP_JOINED;
n->join_type = type;
n->plan1 = castNode(JsonTablePlan, plan1);
n->plan2 = castNode(JsonTablePlan, plan2);
n->location = location;
return (Node *) n;
}
/*
* makeJsonEncoding -
* converts JSON encoding name to enum JsonEncoding