CurtHagenlocher commented on code in PR #3607:
URL: https://github.com/apache/arrow-adbc/pull/3607#discussion_r2453185296
##########
c/include/arrow-adbc/adbc.h:
##########
@@ -2013,6 +2181,74 @@ AdbcStatusCode AdbcStatementExecuteQuery(struct
AdbcStatement* statement,
struct ArrowArrayStream* out,
int64_t* rows_affected, struct
AdbcError* error);
+/// \brief Retrieve the next result set from a multi-statement execution
+///
+/// This invalidates any prior result sets. This AdbcStatement must
+/// outlive the returned ArrowArrayStream.
+///
+/// \since ADBC API revision 1.2.0
+///
+/// \param[in] statement The statement to retrieve the next result set from.
+/// \param[out] out The results. Pass NULL if the client does not
+/// expect a result set.
+/// \param[out] rows_affected The number of rows affected if known,
+/// else -1. Pass NULL if the client does not want this information.
+/// \param[out] error An optional location to return an error
+/// message if necessary.
+///
+/// \return ADBC_STATUS_NOT_IMPLEMENTED if the driver does not support
+/// multi-result set execution, ADBC_STATUS_OK if next result set is
+/// being returned successfully. ADBC_STATUS_NOT_FOUND is returned
+/// when there are no more result sets.
+ADBC_EXPORT
+AdbcStatusCode AdbcStatementNextResultSet(struct AdbcStatement* statement,
Review Comment:
It would be nice if this also worked for "schema-only" evaluation. (I
started down this road last year and my work-in-progress was at
[https://github.com/apache/arrow-adbc/compare/main...CurtHagenlocher:arrow-adbc:MoreResults](https://github.com/apache/arrow-adbc/compare/main...CurtHagenlocher:arrow-adbc:MoreResults)
##########
c/include/arrow-adbc/adbc.h:
##########
@@ -2013,6 +2181,74 @@ AdbcStatusCode AdbcStatementExecuteQuery(struct
AdbcStatement* statement,
struct ArrowArrayStream* out,
int64_t* rows_affected, struct
AdbcError* error);
+/// \brief Retrieve the next result set from a multi-statement execution
+///
+/// This invalidates any prior result sets. This AdbcStatement must
+/// outlive the returned ArrowArrayStream.
+///
+/// \since ADBC API revision 1.2.0
+///
+/// \param[in] statement The statement to retrieve the next result set from.
+/// \param[out] out The results. Pass NULL if the client does not
+/// expect a result set.
+/// \param[out] rows_affected The number of rows affected if known,
+/// else -1. Pass NULL if the client does not want this information.
+/// \param[out] error An optional location to return an error
+/// message if necessary.
+///
+/// \return ADBC_STATUS_NOT_IMPLEMENTED if the driver does not support
+/// multi-result set execution, ADBC_STATUS_OK if next result set is
+/// being returned successfully. ADBC_STATUS_NOT_FOUND is returned
+/// when there are no more result sets.
+ADBC_EXPORT
+AdbcStatusCode AdbcStatementNextResultSet(struct AdbcStatement* statement,
Review Comment:
It would be nice if this also worked for "schema-only" evaluation. (I
started down this road last year and my work-in-progress was at
[https://github.com/apache/arrow-adbc/compare/main...CurtHagenlocher:arrow-adbc:MoreResults](https://github.com/apache/arrow-adbc/compare/main...CurtHagenlocher:arrow-adbc:MoreResults).)
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