postgres_fdw: Fix bug in checking of return value of PQsendQuery(). When postgres_fdw begins an asynchronous data fetch, it submits FETCH query by using PQsendQuery(). If PQsendQuery() fails and returns 0, postgres_fdw should report an error. But, previously, postgres_fdw reported an error only when the return value is less than 0, though PQsendQuery() never return the values other than 0 and 1. Therefore postgres_fdw could not handle the failure to send FETCH query in an asynchronous data fetch.
This commit fixes postgres_fdw so that it reports an error when PQsendQuery() returns 0. Back-patch to v14 where asynchronous execution was supported in postgres_fdw. Author: Fujii Masao Reviewed-by: Japin Li, Tom Lane Discussion: https://postgr.es/m/[email protected] Branch ------ REL_14_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/169d50ba34a91a1c3e2535b8ef49480bad4b9867 Modified Files -------------- contrib/postgres_fdw/postgres_fdw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
