[CALCITE-3468] JDBC adapter may generate casts on Oracle for varchar without the precision and for char with the precision exceeding max length of Oracle#1861
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danny0405
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Mar 20, 2020
danny0405
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| if (type.getPrecision() == RelDataType.PRECISION_NOT_SPECIFIED) { | ||
| type = allowTypeWithUnspecifiedPrecision(type) | ||
| ? type | ||
| : new SqlTypeFactoryImpl(getTypeSystem()).createSqlType(type.getSqlTypeName()); |
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Instead of create a new type, i would prefer to let the SqlTypeUtil.convertTypeToSpec(type, charSet, maxPrecision) support a explicit precision parameter.
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Thanks a lot , I have already addressed.
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| String charSetName, int maxPrecision) { | ||
| String charSetName, int maxPrecision, | ||
| boolean allowsPrecisionUnspecified, int defaultPrecision) { | ||
| SqlTypeName typeName = type.getSqlTypeName(); |
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I would suggest to replace allowsPrecisionUnspecified and defaultPrecision with a single explicitPrecision, and if a explicitPrecision is specified, use it directly. Leave out the complex allowsPrecisionUnspecified decision to the invoker.
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This pull request has been updated, thanks for your reviewing, it's really helpful.
…without the precision and for char with the precision exceeding max length of Oracle (Wenhui Tang)
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Hi @wenhuitang, could you rebase the PR? |
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Oracle requires VARCHAR with precision, and the max precision of VARCHAR is 4000, the max precision of CHAR is 2000. When the precision of CHAR is not assigned, it has the default value 1 which is the same as Calcite.