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https://issues.apache.org/jira/browse/FLINK-23324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17381186#comment-17381186
]
Ada Wong edited comment on FLINK-23324 at 7/15/21, 8:57 AM:
------------------------------------------------------------
This following is Postgres table DDL .
{code:sql}
create table foo
(
id integer,
"foo_Bar" varchar(40)
);
{code}
This following is Flink Sink DDL
{code:sql}
CREATE TABLE pg_sink (
id INT,
foo_Bar STRING,
PRIMARY KEY (id) NOT ENFORCED
) WITH (
'connector' = 'jdbc',
'url' = 'jdbc:postgresql://localhost:5432/postgres',
'table-name' = 'foo',
'username' = 'postgres',
'password' = 'postgres'
);
{code}
When we use Flink SQL insert Postgres, it throw following exception.
2021-07-15 16:50:18,719 - 17170 ERROR [jdbc-upsert-output-format-thread-1]
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat:JDBC
executeBatch error, retry times = 3
java.sql.BatchUpdateException: Batch entry 0 INSERT INTO foo(id, foo_Bar)
VALUES (0, 'foo') ON CONFLICT (id) DO UPDATE SET id=EXCLUDED.id,
foo_Bar=EXCLUDED.foo_Bar was aborted: ERROR: column "foo_bar" of relation "foo"
does not exist
位置：21 Call getNextException to see other errors in the batch.
at
org.postgresql.jdbc.BatchResultHandler.handleCompletion(BatchResultHandler.java:199)
at
org.postgresql.jdbc.PgStatement.internalExecuteBatch(PgStatement.java:863)
at org.postgresql.jdbc.PgStatement.executeBatch(PgStatement.java:901)
at
org.postgresql.jdbc.PgPreparedStatement.executeBatch(PgPreparedStatement.java:1644)
at
org.apache.flink.connector.jdbc.statement.FieldNamedPreparedStatementImpl.executeBatch(FieldNamedPreparedStatementImpl.java:65)
at
org.apache.flink.connector.jdbc.internal.executor.TableSimpleStatementExecutor.executeBatch(TableSimpleStatementExecutor.java:64)
at
org.apache.flink.connector.jdbc.internal.executor.TableBufferReducedStatementExecutor.executeBatch(TableBufferReducedStatementExecutor.java:101)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.attemptFlush(JdbcBatchingOutputFormat.java:216)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.flush(JdbcBatchingOutputFormat.java:184)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.lambda$open$0(JdbcBatchingOutputFormat.java:128)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.postgresql.util.PSQLException: ERROR: column "foo_bar" of
relation "foo" does not exist
位置：21
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2552)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2284)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:322)
at
org.postgresql.jdbc.PgStatement.internalExecuteBatch(PgStatement.java:859)
... 15 more
was (Author: ana4):
This following is Postgres table DDL .
{code:sql}
create table foo
(
id integer,
"foo_Bar" varchar(40)
);
{code}
This following is Flink Sink DDL
{code:sql}
CREATE TABLE pg_sink (
id INT,
foo_Bar STRING,
PRIMARY KEY (id) NOT ENFORCED
) WITH (
'connector' = 'jdbc',
'url' = 'jdbc:postgresql://localhost:5432/postgres',
'table-name' = 'foo',
'username' = 'postgres',
'password' = 'postgres'
);
{code}
When we use Flink SQL insert Postgres, it throw following exception.
2021-07-15 16:50:18,719 - 17170 ERROR [jdbc-upsert-output-format-thread-1]
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat:JDBC
executeBatch error, retry times = 3
java.sql.BatchUpdateException: Batch entry 0 INSERT INTO foo(id, foo_Bar)
VALUES (0, 'foo') ON CONFLICT (id) DO UPDATE SET id=EXCLUDED.id,
foo_Bar=EXCLUDED.foo_Bar was aborted: ERROR: column "foo_bar" of relation "foo"
does not exist
位置：21 Call getNextException to see other errors in the batch.
at
org.postgresql.jdbc.BatchResultHandler.handleCompletion(BatchResultHandler.java:199)
at
org.postgresql.jdbc.PgStatement.internalExecuteBatch(PgStatement.java:863)
at org.postgresql.jdbc.PgStatement.executeBatch(PgStatement.java:901)
at
org.postgresql.jdbc.PgPreparedStatement.executeBatch(PgPreparedStatement.java:1644)
at
org.apache.flink.connector.jdbc.statement.FieldNamedPreparedStatementImpl.executeBatch(FieldNamedPreparedStatementImpl.java:65)
at
org.apache.flink.connector.jdbc.internal.executor.TableSimpleStatementExecutor.executeBatch(TableSimpleStatementExecutor.java:64)
at
org.apache.flink.connector.jdbc.internal.executor.TableBufferReducedStatementExecutor.executeBatch(TableBufferReducedStatementExecutor.java:101)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.attemptFlush(JdbcBatchingOutputFormat.java:216)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.flush(JdbcBatchingOutputFormat.java:184)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.lambda$open$0(JdbcBatchingOutputFormat.java:128)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.postgresql.util.PSQLException: ERROR: column "foo_bar" of
relation "foo" does not exist
位置：21
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2552)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2284)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:322)
at
org.postgresql.jdbc.PgStatement.internalExecuteBatch(PgStatement.java:859)
... 15 more
> Postgres of JDBC Connector enable case-sensitive.
> -------------------------------------------------
>
> Key: FLINK-23324
> URL: https://issues.apache.org/jira/browse/FLINK-23324
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Affects Versions: 1.13.1, 1.12.4
> Reporter: Ada Wong
> Priority: Major
>
> Now the PostgresDialect is case-insensitive. I think this is a bug.
> https://stackoverflow.com/questions/20878932/are-postgresql-column-names-case-sensitive
> https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
> Could we delete PostgresDialect#quoteIdentifier, make it using super class.
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