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https://issues.apache.org/jira/browse/DRILL-2763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Barclay (Drill) updated DRILL-2763:
------------------------------------------
Fix Version/s: (was: 1.2.0)
1.1.0
> Implement INFORMATION_SCHEMA.COLUMNS enough for relevant tools
> [umbrella/tracking bug]
> --------------------------------------------------------------------------------------
>
> Key: DRILL-2763
> URL: https://issues.apache.org/jira/browse/DRILL-2763
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Information Schema
> Reporter: Daniel Barclay (Drill)
> Assignee: Daniel Barclay (Drill)
> Fix For: 1.1.0
>
>
> [TBD: intro.]
> *A. {{COLUMNS}} columns existing in Drill that are not compliant with
> standard SQL*:
> 1. *TDB*: {{TABLE_NAME}} holds the original form of the identifier but
> _might_ need to be uppercased here to be compliant (or possibly internal
> matching queries (e.g., for JDBC's getColumns(...)) could be
> case-insensitive).
> 2. *TDB*: {{COLUMN_NAME}} holds the original form of the identifier but
> _might_ need to be uppercased here to be compliant (or possibly internal
> matching queries (e.g., for JDBC's getColumns(...)) could be
> case-insensitive).
> 3. {{ORDINAL_POSITION}} values are zero-based rather than being one-based.
> 4. {{CHARACTER_MAXIMUM_LENGTH}}, {{NUMERIC_PRECISION_RADIX}},
> {{NUMERIC_SCALE}}, and {{NUMERIC_PRECISION}} use {{-1}} instead of {{NULL}}
> for the "not-applicable" case.
> 5. {{NUMERIC_PRECISION}} for non-{{DECIMAL}}/{{NUMERIC}} exact numeric types
> (e.g., {{INTEGER}}) and approximate numeric types (e.g., {{DOUBLE}}) is
> {{-1}} (logical null) instead of the specified values.
> 6. {{NUMERIC_SCALE}} for non-{{DECIMAL}}/{{NUMERIC}} exact numeric types is
> {{-1}} instead of {{0}}.
> 7. {{NUMERIC_SCALE}} for approximate numeric types is {{-1}} instead of the
> number of bits of precision (24 and 53(?)).
> 8. {{NUMERIC_PRECISION_RADIX}} for integral exact numeric types is {{-1}}
> instead of {{10}}.
> 9. {{NUMERIC_PRECISION_RADIX}} for approximate exact numeric types is {{-1}}
> instead of {{2}}.
> 10. {{CHARACTER_MAXIMUM_LENGTH}} for types {{CHAR}}, {{BINARY}}, and {{VAR
> BINARY}} is {{-1}} instead of the corresponding length.
> 11. {{DATA_TYPE}} values for {{INTERVAL}} with {{YEAR}} and/or {{MONTH}} and
> for {{INTERVAL}} with {{DAY}}, {{HOUR}}, {{MINUTE}}, and/or {{SECOND}} are
> "{{INTERVAL_YEAR_MONTH}}" and "{{INTERVAL_DATA_TIME}}", respectively, instead
> of the data type name "{{INTERVAL}}".
> 12. {{DATA_TYPE}} values for non-atomic types seem to be type descriptors
> ({{<data type>}} syntax; e.g., "{{VARCHAR(65536) ARRAY}}") instead of just
> data type names (e.g., "{{ARRAY}}").
> *B. Standard {{COLUMNS}} columns that don't exist in Drill and that probably
> are more relevant*:
> 1. {{CHARACTER_OCTET_LENGTH}} does not exist. (Drill's JDBC driver needs to
> return this, and currently tries to compute it itself.)
> 2. {{DATETIME_PRECISION}} does not exist. (Drill's JDBC driver probably needs
> it to compute its {{getColumns()}}'s {{COLUMN_SIZE}} correctly.)
> 3. {{INTERVAL_TYPE}} does not exist. (Drill's JDBC driver needs this to
> compute its {{getColumns()}}'s {{COLUMN_SIZE}} correctly once
> {{COLUMNS.DATA_TYPE}} is correct.}
> 4. {{INTERVAL_PRECISION}} does not exist. (Drill's JDBC driver needs this to
> compute its {{getColumns()}}'s {{COLUMN_SIZE}} correctly.)
> [TBD]
> 5. {{MAXIMUM_CARDINALITY}} does not exist. (This might be relevant for
> JDBC's {{getColumns()}}'s {{COLUMN_SIZE}}.)
> *C. Standard {{COLUMNS}} columns that don't exist in Drill but are less
> likely to be relevant (listed for completeness)*:
> - {{COLUMN_DEFAULT}}
> - {{CHARACTER_SET_CATALOG}}
> - {{CHARACTER_SET_SCHEMA}}
> - {{CHARACTER_SET_NAME}}
> - {{COLLATION_CATALOG}}
> - {{COLLATION_SCHEMA}}
> - {{COLLATION_NAME}}
> - {{DOMAIN_CATALOG}}
> - {{DOMAIN_SCHEMA}}
> - {{DOMAIN_NAME}}
> - {{UDT_CATALOG}}
> - {{UDT_SCHEMA}}
> - {{UDT_NAME}}
> - {{SCOPE_CATALOG}}
> - {{SCOPE_SCHEMA}}
> - {{SCOPE_NAME}}
> - {{DTD_IDENTIFIER}}
> - {{IS_SELF_REFERENCING}}
> - {{IS_IDENTITY}}
> - {{IDENTITY_GENERATION}}
> - {{IDENTITY_START}}
> - {{IDENTITY_INCREMENT}}
> - {{IDENTITY_MAXIMUM}}
> - {{IDENTITY_MINIMUM}}
> - {{IDENTITY_CYCLE}}
> - {{IS_GENERATED}}
> - {{GENERATION_EXPRESSION}}
> - {{IS_SYSTEM_TIME_PERIOD_START}}
> - {{IS_SYSTEM_TIME_PERIOD_END}}
> - {{SYSTEM_TIME_PERIOD_TIMESTAMP_GENERATION}}
> - {{IS_UPDATABLE}}
> - {{DECLARED_DATA_TYPE}}
> - {{DECLARED_NUMERIC_PRECISION}}
> - {{DECLARED_NUMERIC_SCALE}}
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