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Improve error message for INSERT via clickhouse-client

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With '\n...' after the query [1] clickhouse-client prefer data from the
INSERT over from stdin, and produce very tricky message:

    Code: 27. DB::Exception: Cannot parse input: expected '\n' before: ' ': (at row 1)

Well for TSV it is ok, but for RowBinary:

    Code: 33. DB::Exception: Cannot read all data. Bytes read: 1. Bytes expected: 4.

So improve error message by adding the source of data for INSERT.

  [1]: clickhouse-client -q "INSERT INTO data FORMAT TSV\n " <<<2
This commit is contained in:
Azat Khuzhin 2020-09-16 23:56:16 +03:00
parent 4a094491f2
commit 7d046b24e6
3 changed files with 38 additions and 2 deletions
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23
programs/client/Client.cpp
View File

@ -1502,7 +1502,18 @@ private:
{
/// Send data contained in the query.
ReadBufferFromMemory data_in(parsed_insert_query->data, parsed_insert_query->end - parsed_insert_query->data);
sendDataFrom(data_in, sample, columns_description);
try
{
sendDataFrom(data_in, sample, columns_description);
}
catch (Exception & e)
{
/// The following query will use data from input
// "INSERT INTO data FORMAT TSV\n " < data.csv
// And may be pretty hard to debug, so add information about data source to make it easier.
e.addMessage("data for INSERT was parsed from query");
throw;
}
// Remember where the data ended. We use this info later to determine
// where the next query begins.
parsed_insert_query->end = data_in.buffer().begin() + data_in.count();
@ -1510,7 +1521,15 @@ private:
else if (!is_interactive)
{
/// Send data read from stdin.
sendDataFrom(std_in, sample, columns_description);
try
{
sendDataFrom(std_in, sample, columns_description);
}
catch (Exception & e)
{
e.addMessage("data for INSERT was parsed from stdin");
throw;
}
}
else
throw Exception("No data to insert", ErrorCodes::NO_DATA_TO_INSERT);

2
tests/queries/0_stateless/01501_clickhouse_client_INSERT_exception.reference Normal file
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@ -0,0 +1,2 @@
1
10

15
tests/queries/0_stateless/01501_clickhouse_client_INSERT_exception.sh Executable file
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@ -0,0 +1,15 @@
#!/usr/bin/env bash
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
. "$CURDIR"/../shell_config.sh
${CLICKHOUSE_CLIENT} -q "DROP TABLE IF EXISTS data"
${CLICKHOUSE_CLIENT} -q "CREATE TABLE data (key Int) Engine=Memory()"
${CLICKHOUSE_CLIENT} --input_format_parallel_parsing=0 -q "INSERT INTO data SELECT key FROM input('key Int') FORMAT TSV" <<<10
# with '\n...' after the query clickhouse-client prefer data from the query over data from stdin, and produce very tricky message:
# Code: 27. DB::Exception: Cannot parse input: expected '\n' before: ' ': (at row 1)
# well for TSV it is ok, but for RowBinary:
# Code: 33. DB::Exception: Cannot read all data. Bytes read: 1. Bytes expected: 4.
# so check that the exception message contain the data source.
${CLICKHOUSE_CLIENT} --input_format_parallel_parsing=0 -q "INSERT INTO data FORMAT TSV " <<<2 |& grep -F -c 'data for INSERT was parsed from query'
${CLICKHOUSE_CLIENT} -q "SELECT * FROM data"