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https://issues.apache.org/jira/browse/SPARK-43438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17736485#comment-17736485
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BingKun Pan commented on SPARK-43438:
-------------------------------------
I checked and found that after `[https://github.com/apache/spark/pull/41458]`,
1.when execute sql "INSERT INTO tabtest SELECT 1", will execute successfully.
[https://github.com/apache/spark/blob/cd69d4dd18cfaccf58bf64dde6268f7ea1d4415b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/rules.scala#L393-L397]
[https://github.com/apache/spark/blob/cd69d4dd18cfaccf58bf64dde6268f7ea1d4415b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/rules.scala#L401]
2.when execute sql "INSERT INTO tabtest(c1, c2) SELECT 1", the error is as
follows:
[INSERT_COLUMN_ARITY_MISMATCH.NOT_ENOUGH_DATA_COLUMNS] Cannot write to
`spark_catalog`.`default`.`tabtest`, the reason is not enough data columns:
Table columns: `c1`, `c2`.
Data columns: `1`.
3.when execute sql "INSERT INTO tabtest(c1, c2) SELECT 1", the error is as
follows:
[INSERT_COLUMN_ARITY_MISMATCH.TOO_MANY_DATA_COLUMNS] Cannot write to
`spark_catalog`.`default`.`t1`, the reason is too many data columns:
Table columns: `c1`.
Data columns: `1`, `2`, `3`.
Among them, 2 and 3 are in line with our expectations.
But the behavior difference between 1 and 2 is a bit confusing.
> Fix mismatched column list error on INSERT
> ------------------------------------------
>
> Key: SPARK-43438
> URL: https://issues.apache.org/jira/browse/SPARK-43438
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Affects Versions: 3.4.0
> Reporter: Serge Rielau
> Priority: Major
>
> This error message is pretty bad, and common
> "_LEGACY_ERROR_TEMP_1038" : {
> "message" : [
> "Cannot write to table due to mismatched user specified column
> size(<columnSize>) and data column size(<outputSize>)."
> ]
> },
> It can perhaps be merged with this one - after giving it an ERROR_CLASS
> "_LEGACY_ERROR_TEMP_1168" : {
> "message" : [
> "<tableName> requires that the data to be inserted have the same number of
> columns as the target table: target table has <targetColumns> column(s) but
> the inserted data has <insertedColumns> column(s), including <staticPartCols>
> partition column(s) having constant value(s)."
> ]
> },
> Repro:
> CREATE TABLE tabtest(c1 INT, c2 INT);
> INSERT INTO tabtest SELECT 1;
> `spark_catalog`.`default`.`tabtest` requires that the data to be inserted
> have the same number of columns as the target table: target table has 2
> column(s) but the inserted data has 1 column(s), including 0 partition
> column(s) having constant value(s).
> INSERT INTO tabtest(c1) SELECT 1, 2, 3;
> Cannot write to table due to mismatched user specified column size(1) and
> data column size(3).; line 1 pos 24
>
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