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Prevent use of extended query protocol for BEGIN before COPY #1639

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merged 1 commit into from Dec 6, 2019
Merged

Prevent use of extended query protocol for BEGIN before COPY #1639

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8 changes: 6 additions & 2 deletions pgjdbc/src/main/java/org/postgresql/core/v3/QueryExecutorImpl.java
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Expand Up @@ -630,8 +630,12 @@ public void handleWarning(SQLWarning warning) {
};

try {
sendOneQuery(beginTransactionQuery, SimpleQuery.NO_PARAMETERS, 0, 0,
QueryExecutor.QUERY_NO_METADATA);
/* Send BEGIN with simple protocol preferred */
int beginFlags = QueryExecutor.QUERY_NO_METADATA
| QueryExecutor.QUERY_ONESHOT
| QueryExecutor.QUERY_EXECUTE_AS_SIMPLE;
beginFlags = updateQueryMode(beginFlags);
sendOneQuery(beginTransactionQuery, SimpleQuery.NO_PARAMETERS, 0, 0, beginFlags);
sendSync();
processResults(handler, 0);
estimatedReceiveBufferBytes = 0;
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