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https://issues.apache.org/jira/browse/FLINK-12449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17693580#comment-17693580
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Ran Tao edited comment on FLINK-12449 at 2/26/23 4:04 AM:
----------------------------------------------------------
[~libenchao] thanks, benchao.
This issue is not actually created by me （it's an umbrella issue.),
!image-2023-02-26-11-55-47-406.png|width=999,height=218!
I also have doubts. In fact, the functions related to *bit_or* and
{*}bit_and{*}, such as in calcite, are an agg function, not a scalar function.
I think the issue is also wrong here. It actually implements bit operations
like a & b, a | b. For example, the same issue:
https://issues.apache.org/jira/browse/FLINK-12451
!image-2023-02-26-11-56-21-005.png|width=523,height=283!
*Currently, flink does not support bit operations,*
Flink SQL> select 1+1 from t3;
{+}---{-}{-}{+}------------+
|op| EXPR$0|
{+}---{-}{-}{+}------------+
|+I| 2|
|+I| 2|
{+}---{-}{-}{+}------------+
Received a total of 2 rows
Flink SQL> select 1&1 from t3;
Exception in thread "main" org.apache.flink.table.client.SqlClientException:
Could not read from command line.
at
org.apache.flink.table.client.cli.CliClient.getAndExecuteStatements(CliClient.java:205)
at
org.apache.flink.table.client.cli.CliClient.executeInteractive(CliClient.java:168)
at
org.apache.flink.table.client.cli.CliClient.executeInInteractiveMode(CliClient.java:113)
at org.apache.flink.table.client.SqlClient.openCli(SqlClient.java:169)
at org.apache.flink.table.client.SqlClient.start(SqlClient.java:118)
at org.apache.flink.table.client.SqlClient.startClient(SqlClient.java:228)
at org.apache.flink.table.client.SqlClient.main(SqlClient.java:179)
Caused by: org.apache.flink.sql.parser.impl.TokenMgrError: Lexical error at
line 1, column 9. Encountered: "&" (38), after : ""
at
org.apache.flink.sql.parser.impl.FlinkSqlParserImplTokenManager.getNextToken(FlinkSqlParserImplTokenManager.java:26752)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl$TokenIterator.scan(SqlCommandParserImpl.java:89)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl$TokenIterator.next(SqlCommandParserImpl.java:81)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl.checkIncompleteStatement(SqlCommandParserImpl.java:141)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl.getCommand(SqlCommandParserImpl.java:111)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl.parseStatement(SqlCommandParserImpl.java:52)
at
org.apache.flink.table.client.cli.parser.SqlMultiLineParser.parse(SqlMultiLineParser.java:82)
at org.jline.reader.impl.LineReaderImpl.acceptLine(LineReaderImpl.java:2964)
at org.jline.reader.impl.LineReaderImpl$1.apply(LineReaderImpl.java:3778)
at org.jline.reader.impl.LineReaderImpl.readLine(LineReaderImpl.java:679)
at
org.apache.flink.table.client.cli.CliClient.getAndExecuteStatements(CliClient.java:183)
... 6 more
but this is a basic operation in other databases or languages. for example:
mysql> select 1+2 from db;
+-----+
|1+2|
+-----+
| 3|
| 3|
+-----+
2 rows in set (0.00 sec)
mysql> select 1&2 from db;
+-----+
|1&2|
+-----+
| 0|
| 0|
+-----+
2 rows in set (0.00 sec)
mysql> select 1|2 from db;
+-----+
|1|2|
+-----+
| 3|
| 3|
+-----+
2 rows in set (0.00 sec)
mysql> select 1^2 from db;
+-----+
|1^2|
+-----+
| 3|
| 3|
+-----+
2 rows in set (0.00 sec)
please correct me. so i can change the description(could be a&b, a|b) of this
issue. And finally support these bit-operations. cc [~twalthr]
was (Author: lemonjing):
[~libenchao] thanks, benchao.
This issue is not actually created by me （it's an umbrella issue.),
!image-2023-02-26-11-55-47-406.png!
I also have doubts. In fact, the functions related to *bit_or* and
{*}bit_and{*}, such as in calcite, are an agg function, not a scalar function.
I think the issue is also wrong here. It actually implements bit operations
like a & b, a | b. For example, the same issue:
https://issues.apache.org/jira/browse/FLINK-12451
!image-2023-02-26-11-56-21-005.png!
*Currently, flink does not support bit operations,*
Flink SQL> select 1+1 from t3;
+----+-------------+
| op | EXPR$0 |
+----+-------------+
| +I | 2 |
| +I | 2 |
+----+-------------+
Received a total of 2 rows
Flink SQL> select 1&1 from t3;
Exception in thread "main" org.apache.flink.table.client.SqlClientException:
Could not read from command line.
at
org.apache.flink.table.client.cli.CliClient.getAndExecuteStatements(CliClient.java:205)
at
org.apache.flink.table.client.cli.CliClient.executeInteractive(CliClient.java:168)
at
org.apache.flink.table.client.cli.CliClient.executeInInteractiveMode(CliClient.java:113)
at org.apache.flink.table.client.SqlClient.openCli(SqlClient.java:169)
at org.apache.flink.table.client.SqlClient.start(SqlClient.java:118)
at org.apache.flink.table.client.SqlClient.startClient(SqlClient.java:228)
at org.apache.flink.table.client.SqlClient.main(SqlClient.java:179)
Caused by: org.apache.flink.sql.parser.impl.TokenMgrError: Lexical error at
line 1, column 9. Encountered: "&" (38), after : ""
at
org.apache.flink.sql.parser.impl.FlinkSqlParserImplTokenManager.getNextToken(FlinkSqlParserImplTokenManager.java:26752)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl$TokenIterator.scan(SqlCommandParserImpl.java:89)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl$TokenIterator.next(SqlCommandParserImpl.java:81)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl.checkIncompleteStatement(SqlCommandParserImpl.java:141)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl.getCommand(SqlCommandParserImpl.java:111)
at
org.apache.flink.table.client.cli.parser.SqlCommandParserImpl.parseStatement(SqlCommandParserImpl.java:52)
at
org.apache.flink.table.client.cli.parser.SqlMultiLineParser.parse(SqlMultiLineParser.java:82)
at org.jline.reader.impl.LineReaderImpl.acceptLine(LineReaderImpl.java:2964)
at org.jline.reader.impl.LineReaderImpl$1.apply(LineReaderImpl.java:3778)
at org.jline.reader.impl.LineReaderImpl.readLine(LineReaderImpl.java:679)
at
org.apache.flink.table.client.cli.CliClient.getAndExecuteStatements(CliClient.java:183)
... 6 more
but this is a basic operation in other databases or languages. for example:
mysql> select 1+2 from db;
+-----+
| 1+2 |
+-----+
| 3 |
| 3 |
+-----+
2 rows in set (0.00 sec)
mysql> select 1&2 from db;
+-----+
| 1&2 |
+-----+
| 0 |
| 0 |
+-----+
2 rows in set (0.00 sec)
mysql> select 1|2 from db;
+-----+
| 1|2 |
+-----+
| 3 |
| 3 |
+-----+
2 rows in set (0.00 sec)
mysql> select 1^2 from db;
+-----+
| 1^2 |
+-----+
| 3 |
| 3 |
+-----+
2 rows in set (0.00 sec)
please correct me. so i can change the description(could be a&b, a|b) of this
issue. And finally support these bit-operations. cc [~twalthr]
> [Bitwise Functions] Add BIT_AND, BIT_OR functions supported in Table API and
> SQL
> ---------------------------------------------------------------------------------
>
> Key: FLINK-12449
> URL: https://issues.apache.org/jira/browse/FLINK-12449
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: Zhanchun Zhang
> Priority: Major
> Labels: auto-unassigned, pull-request-available
> Attachments: image-2023-02-26-11-55-47-406.png,
> image-2023-02-26-11-56-21-005.png
>
>
> Bitwise AND.
> eg. SELECT BIT_AND(29,15), returns 13
> Bitwise OR
> eg. SELECT BIT_OR(29 ,15), returns 31
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