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Support Oracle pivot with alias SQL parse #36761

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Merged
merged 2 commits into from
Sep 30, 2025
Merged

Support Oracle pivot with alias SQL parse #36761

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Support Oracle pivot with alias SQL parse
FlyingZC Sep 30, 2025
ffb5272
Support Oracle pivot with alias SQL parse
FlyingZC Sep 30, 2025
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4 changes: 2 additions & 2 deletions parser/sql/engine/dialect/oracle/src/main/antlr4/imports/oracle/DMLStatement.g4
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Original file line number Diff line number Diff line change
Expand Up @@ -517,7 +517,7 @@ modifyExternalTableProperties

pivotClause
: PIVOT XML?
LP_ aggregationFunction (AS? alias)? (COMMA_ aggregationFunction (AS? alias)?)* pivotForClause pivotInClause RP_
LP_ aggregationFunction (AS? alias)? (COMMA_ aggregationFunction (AS? alias)?)* pivotForClause pivotInClause RP_ alias?
;

pivotForClause
Expand All @@ -535,7 +535,7 @@ pivotInClauseExpr
;

unpivotClause
: UNPIVOT ((INCLUDE | EXCLUDE) NULLS)? LP_ columnNames pivotForClause unpivotInClause RP_
: UNPIVOT ((INCLUDE | EXCLUDE) NULLS)? LP_ (columnName | columnNames) pivotForClause unpivotInClause RP_ alias?
;

unpivotInClause
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23 changes: 14 additions & 9 deletions test/it/parser/src/main/resources/case/dml/select-special-function.xml
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Expand Up @@ -676,19 +676,24 @@
</select>

<select sql-case-id="select_pivot">
<projections start-index="7" stop-index="7">
<shorthand-projection start-index="7" stop-index="7"/>
<projections start-index="7" stop-index="18">
<shorthand-projection start-index="7" stop-index="18">
<owner name="pivotAlias" start-index="7" stop-index="16"/>
<actual-projections start-index="0" stop-index="0"/>
</shorthand-projection>
</projections>
<from>
<subquery-table start-index="14" stop-index="34" >
<from start-index="25" stop-index="104">
<subquery-table start-index="25" stop-index="45">
<subquery>
<select>
<projections start-index="22" stop-index="22">
<shorthand-projection start-index="22" stop-index="22"/>
</projections>
<from start-index="29" stop-index="33">
<simple-table name="sales" start-index="29" stop-index="33"/>
<from start-index="40" stop-index="44">
<simple-table name="sales" start-index="40" stop-index="44"/>
</from>
<projections start-index="33" stop-index="33">
<shorthand-projection start-index="33" stop-index="33">
<actual-projections start-index="0" stop-index="0"/>
</shorthand-projection>
</projections>
</select>
</subquery>
</subquery-table>
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2 changes: 1 addition & 1 deletion test/it/parser/src/main/resources/sql/supported/dml/select-special-function.xml
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Expand Up @@ -48,7 +48,7 @@
<sql-case id="select_mod_function" value="SELECT MOD(order_id, 1) from t_order" db-types="PostgreSQL,openGauss" />
<sql-case id="select_sys_xml_agg" value="SELECT SYS_XMLAGG(SYS_XMLGEN(last_name)) XMLAGG FROM employees WHERE last_name LIKE 'R%' ORDER BY xmlagg;" db-types="Oracle" />
<sql-case id="select_set_function" value="SELECT customer_id, SET(cust_address_ntab) address FROM customers_demo ORDER BY customer_id;" db-types="Oracle" />
<sql-case id="select_pivot" value="SELECT * FROM (SELECT * FROM sales) PIVOT (SUM(amount) FOR (year, month) IN ((2018, 'Jan'), (2018, 'Feb')))" db-types="Oracle"/>
<sql-case id="select_pivot" value="SELECT pivotAlias.* FROM (SELECT * FROM sales) PIVOT (SUM(amount) FOR month IN ('Jan', 'Feb')) pivotAlias" db-types="Oracle"/>
<sql-case id="select_unpivot" value="SELECT * FROM (SELECT * FROM sales) UNPIVOT ((cert_type, cert_number) FOR cert_source IN ((primary_cert_type, primary_cert_no), (alt_cert_type1, alt_cert_no1), (alt_cert_type2, alt_cert_no2)))" db-types="Oracle"/>
<sql-case id="select_string_split_function" value="SELECT value as tag, COUNT(*) AS [number_of_articles] FROM Product CROSS APPLY STRING_SPLIT(Tags, ',') GROUP BY value HAVING COUNT(*) > 2 ORDER BY COUNT(*) DESC" db-types="SQLServer"/>
<sql-case id="select_from_open_json_function" value="SELECT * FROM OPENJSON(@array) WITH ( month VARCHAR(3), temp int, month_id tinyint '$.sql:identity()') as months" db-types="SQLServer"/>
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