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SQL/JSON: Improve some error messages

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This improves some error messages emitted by SQL/JSON query functions
by mentioning column name when available, such as when they are
invoked as part of evaluating JSON_TABLE() columns.  To do so, a new
field column_name is added to both JsonFuncExpr and JsonExpr that is
only populated when creating those nodes for transformed JSON_TABLE()
columns.

While at it, relevant error messages are reworded for clarity.

Reported-by: Jian He <jian.universality@gmail.com>
Suggested-by: Jian He <jian.universality@gmail.com>
Discussion: https://postgr.es/m/CACJufxG_e0QLCgaELrr2ZNz7AxPeGCNKAORe3fHtFCQLsH4J4Q@mail.gmail.com
This commit is contained in:
Amit Langote
2024-04-18 14:33:47 +09:00
parent 40126ac68f
commit b4fad46b6b
10 changed files with 100 additions and 61 deletions
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6
src/include/utils/jsonpath.h
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@@ -300,9 +300,11 @@ typedef struct JsonPathVariable
/* SQL/JSON item */
extern bool JsonPathExists(Datum jb, JsonPath *path, bool *error, List *vars);
extern Datum JsonPathQuery(Datum jb, JsonPath *jp, JsonWrapper wrapper,
bool *empty, bool *error, List *vars);
bool *empty, bool *error, List *vars,
const char *column_name);
extern JsonbValue *JsonPathValue(Datum jb, JsonPath *jp, bool *empty,
bool *error, List *vars);
bool *error, List *vars,
const char *column_name);
extern PGDLLIMPORT const TableFuncRoutine JsonbTableRoutine;