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HHH-18225 Fix for Informix syntax error in DISTINCT clause before SKIP clause

This commit is contained in:
Vladimír Kuruc 2024-06-04 15:49:12 +02:00 committed by Christian Beikov
parent 224e8ca57a
commit b687120bad
1 changed files with 19 additions and 1 deletions
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20
hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/InformixSqlAstTranslator.java
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@ -10,11 +10,11 @@ import java.util.List;
import org.hibernate.engine.spi.SessionFactoryImplementor; import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.query.sqm.ComparisonOperator; import org.hibernate.query.sqm.ComparisonOperator;
import org.hibernate.sql.ast.Clause;
import org.hibernate.sql.ast.SqlAstNodeRenderingMode; import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator; import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
import org.hibernate.sql.ast.spi.SqlSelection; import org.hibernate.sql.ast.spi.SqlSelection;
import org.hibernate.sql.ast.tree.Statement; import org.hibernate.sql.ast.tree.Statement;
import org.hibernate.sql.ast.tree.cte.CteStatement;
import org.hibernate.sql.ast.tree.expression.Expression; import org.hibernate.sql.ast.tree.expression.Expression;
import org.hibernate.sql.ast.tree.expression.Literal; import org.hibernate.sql.ast.tree.expression.Literal;
import org.hibernate.sql.ast.tree.expression.SqlTuple; import org.hibernate.sql.ast.tree.expression.SqlTuple;
@ -35,6 +35,21 @@ public class InformixSqlAstTranslator<T extends JdbcOperation> extends AbstractS
super( sessionFactory, statement ); super( sessionFactory, statement );
} }
@Override
public void visitSelectClause(SelectClause selectClause) {
getClauseStack().push( Clause.SELECT );
try {
appendSql( "select " );
visitSqlSelections( selectClause );
renderVirtualSelections( selectClause );
}
finally {
getClauseStack().pop();
}
}
@Override @Override
protected void visitSqlSelections(SelectClause selectClause) { protected void visitSqlSelections(SelectClause selectClause) {
if ( supportsSkipFirstClause() ) { if ( supportsSkipFirstClause() ) {
@ -43,6 +58,9 @@ public class InformixSqlAstTranslator<T extends JdbcOperation> extends AbstractS
else { else {
renderFirstClause( (QuerySpec) getQueryPartStack().getCurrent() ); renderFirstClause( (QuerySpec) getQueryPartStack().getCurrent() );
} }
if ( selectClause.isDistinct() ) {
appendSql( "distinct " );
}
super.visitSqlSelections( selectClause ); super.visitSqlSelections( selectClause );
} }