luocooong commented on a change in pull request #2193:
URL: https://github.com/apache/drill/pull/2193#discussion_r602734638
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File path:
contrib/storage-jdbc/src/main/java/org/apache/drill/exec/store/jdbc/JdbcRecordReader.java
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@@ -210,8 +212,8 @@ public void setup(OperatorContext operatorContext,
OutputMutator output) {
String name = columns.get(i - 1).getRootSegmentPath();
// column index in ResultSetMetaData starts from 1
int jdbcType = meta.getColumnType(i);
- int width = meta.getPrecision(i);
- int scale = meta.getScale(i);
+ int width = Math.min(meta.getPrecision(i),
DRILL_REL_DATATYPE_SYSTEM.getMaxNumericPrecision());
Review comment:
The function of `min()` is to prevent the precision of the back-end
database from exceeding the limit of Drill, so a selection is required, Is
right?
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