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Remove special casing for explicit row in VALUES
Injecting coerciones field by field is no longer needed. This is now handled by PushCastIntoRow.
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5 files changed

+65
-51
lines changed

5 files changed

+65
-51
lines changed

‎core/trino-main/src/main/java/io/trino/sql/analyzer/StatementAnalyzer.java‎

Lines changed: 8 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -227,7 +227,6 @@
227227
import io.trino.sql.tree.ResetSessionAuthorization;
228228
import io.trino.sql.tree.Revoke;
229229
import io.trino.sql.tree.Rollback;
230-
import io.trino.sql.tree.Row;
231230
import io.trino.sql.tree.RowPattern;
232231
import io.trino.sql.tree.SampledRelation;
233232
import io.trino.sql.tree.SecurityCharacteristic;
@@ -4082,31 +4081,15 @@ protected Scope visitValues(Values node, Optional<Scope> scope)
40824081
// add coercions
40834082
for (Expression row : node.getRows()) {
40844083
Type actualType = analysis.getType(row);
4085-
if (row instanceof Row value) {
4086-
// coerce Row by fields to preserve Row structure and enable optimizations based on this structure, e.g. pruning, predicate extraction
4087-
// TODO coerce the whole Row and add an Optimizer rule that converts CAST(ROW(...) AS ...) into ROW(CAST(...), CAST(...), ...).
4088-
// The rule would also handle Row-type expressions that were specified as CAST(ROW). It should support multiple casts over a ROW.
4089-
for (int i = 0; i < actualType.getTypeParameters().size(); i++) {
4090-
Expression item = value.getFields().get(i).getExpression();
4091-
Type actualItemType = actualType.getTypeParameters().get(i);
4092-
Type expectedItemType = commonSuperType.getTypeParameters().get(i);
4093-
if (!actualItemType.equals(expectedItemType)) {
4094-
analysis.addCoercion(item, expectedItemType);
4095-
}
4096-
}
4097-
}
4098-
else if (actualType instanceof RowType) {
4099-
// coerce row-type expression as a whole
4100-
if (!actualType.equals(commonSuperType)) {
4101-
analysis.addCoercion(row, commonSuperType);
4102-
}
4103-
}
4104-
else {
4084+
4085+
Type targetType = commonSuperType;
4086+
if (!(actualType instanceof RowType)) {
41054087
// coerce field. it will be wrapped in Row by Planner
4106-
Type superType = getOnlyElement(commonSuperType.getTypeParameters());
4107-
if (!actualType.equals(superType)) {
4108-
analysis.addCoercion(row, superType);
4109-
}
4088+
targetType = getOnlyElement(commonSuperType.getTypeParameters());
4089+
}
4090+
4091+
if (!actualType.equals(targetType)) {
4092+
analysis.addCoercion(row, targetType);
41104093
}
41114094
}
41124095

‎core/trino-main/src/main/java/io/trino/sql/planner/RelationPlanner.java‎

Lines changed: 5 additions & 17 deletions
Original file line numberDiff line numberDiff line change
@@ -1757,24 +1757,12 @@ protected RelationPlan visitValues(Values node, Void context)
17571757
TranslationMap translationMap = new TranslationMap(outerContext, analysis.getScope(node), analysis, lambdaDeclarationToSymbolMap, outputSymbols, session, plannerContext);
17581758

17591759
ImmutableList.Builder<Expression> rows = ImmutableList.builder();
1760-
for (io.trino.sql.tree.Expression rowExpression : node.getRows()) {
1761-
if (rowExpression instanceof io.trino.sql.tree.Row row) {
1762-
ImmutableList.Builder<Expression> rowValues = ImmutableList.builder();
1763-
ImmutableList.Builder<RowType.Field> fieldTypes = ImmutableList.builder();
1764-
for (int i = 0; i < row.getFields().size(); i++) {
1765-
io.trino.sql.tree.Row.Field field = row.getFields().get(i);
1766-
Expression expression = coerceIfNecessary(analysis, field.getExpression(), translationMap.rewrite(field.getExpression()));
1767-
rowValues.add(expression);
1768-
fieldTypes.add(new RowType.Field(field.getName().map(Identifier::getCanonicalValue), expression.type()));
1769-
}
1770-
rows.add(new Row(rowValues.build(), RowType.from(fieldTypes.build())));
1771-
}
1772-
else if (analysis.getType(rowExpression) instanceof RowType) {
1773-
rows.add(coerceIfNecessary(analysis, rowExpression, translationMap.rewrite(rowExpression)));
1774-
}
1775-
else {
1776-
rows.add(new Row(ImmutableList.of(coerceIfNecessary(analysis, rowExpression, translationMap.rewrite(rowExpression)))));
1760+
for (io.trino.sql.tree.Expression row : node.getRows()) {
1761+
Expression rewritten = coerceIfNecessary(analysis, row, translationMap.rewrite(row));
1762+
if (!(analysis.getType(row) instanceof RowType)) {
1763+
rewritten = new Row(ImmutableList.of(rewritten));
17771764
}
1765+
rows.add(rewritten);
17781766
}
17791767

17801768
ValuesNode valuesNode = new ValuesNode(idAllocator.getNextId(), outputSymbols, rows.build());

‎core/trino-main/src/main/java/io/trino/sql/planner/iterative/rule/MergeProjectWithValues.java‎

Lines changed: 36 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -20,6 +20,10 @@
2020
import io.trino.matching.Capture;
2121
import io.trino.matching.Captures;
2222
import io.trino.matching.Pattern;
23+
import io.trino.spi.block.SqlRow;
24+
import io.trino.spi.type.RowType;
25+
import io.trino.spi.type.Type;
26+
import io.trino.sql.ir.Constant;
2327
import io.trino.sql.ir.Expression;
2428
import io.trino.sql.ir.Reference;
2529
import io.trino.sql.ir.Row;
@@ -40,6 +44,7 @@
4044
import static com.google.common.collect.ImmutableSet.toImmutableSet;
4145
import static io.trino.SystemSessionProperties.isMergeProjectWithValues;
4246
import static io.trino.matching.Capture.newCapture;
47+
import static io.trino.spi.type.TypeUtils.readNativeValue;
4348
import static io.trino.sql.planner.DeterminismEvaluator.isDeterministic;
4449
import static io.trino.sql.planner.ExpressionNodeInliner.replaceExpression;
4550
import static io.trino.sql.planner.plan.Patterns.project;
@@ -129,10 +134,12 @@ public Result apply(ProjectNode node, Captures captures, Context context)
129134
// do not proceed if ValuesNode contains a non-deterministic expression and it is referenced more than once by the projection
130135
Set<Symbol> nonDeterministicValuesOutputs = new HashSet<>();
131136
for (Expression rowExpression : valuesNode.getRows().get()) {
132-
Row row = (Row) rowExpression;
133-
for (int i = 0; i < valuesNode.getOutputSymbols().size(); i++) {
134-
if (!isDeterministic(row.items().get(i))) {
135-
nonDeterministicValuesOutputs.add(valuesNode.getOutputSymbols().get(i));
137+
if (!(rowExpression instanceof Constant)) {
138+
Row row = (Row) rowExpression;
139+
for (int i = 0; i < valuesNode.getOutputSymbols().size(); i++) {
140+
if (!isDeterministic(row.items().get(i))) {
141+
nonDeterministicValuesOutputs.add(valuesNode.getOutputSymbols().get(i));
142+
}
136143
}
137144
}
138145
}
@@ -150,7 +157,12 @@ public Result apply(ProjectNode node, Captures captures, Context context)
150157
// inline values expressions into projection's assignments
151158
ImmutableList.Builder<Expression> projectedRows = ImmutableList.builder();
152159
for (Expression rowExpression : valuesNode.getRows().get()) {
153-
Map<Reference, Expression> mapping = buildMappings(valuesNode.getOutputSymbols(), (Row) rowExpression);
160+
Map<Reference, Expression> mapping = switch (rowExpression) {
161+
case Row row -> buildMappings(valuesNode.getOutputSymbols(), row);
162+
case Constant constant -> buildMappings(valuesNode.getOutputSymbols(), constant);
163+
default -> throw new IllegalStateException("Unexpected expression type in ValuesNode: " + rowExpression.getClass().getName());
164+
};
165+
154166
Row projectedRow = new Row(expressions.stream()
155167
.map(expression -> replaceExpression(expression, mapping))
156168
.collect(toImmutableList()));
@@ -161,7 +173,8 @@ public Result apply(ProjectNode node, Captures captures, Context context)
161173

162174
private static boolean isSupportedValues(ValuesNode valuesNode)
163175
{
164-
return valuesNode.getRows().isEmpty() || valuesNode.getRows().get().stream().allMatch(Row.class::isInstance);
176+
return valuesNode.getRows().isEmpty() ||
177+
valuesNode.getRows().get().stream().allMatch(row -> row instanceof Row || row instanceof Constant);
165178
}
166179

167180
private Map<Reference, Expression> buildMappings(List<Symbol> symbols, Row row)
@@ -172,4 +185,21 @@ private Map<Reference, Expression> buildMappings(List<Symbol> symbols, Row row)
172185
}
173186
return mappingBuilder.buildOrThrow();
174187
}
188+
189+
private Map<Reference, Expression> buildMappings(List<Symbol> symbols, Constant row)
190+
{
191+
ImmutableMap.Builder<Reference, Expression> mappingBuilder = ImmutableMap.builder();
192+
193+
RowType type = (RowType) row.type();
194+
for (int field = 0; field < type.getFields().size(); field++) {
195+
Type fieldType = type.getFields().get(field).getType();
196+
197+
SqlRow rowValue = (SqlRow) row.value();
198+
mappingBuilder.put(symbols.get(field).toSymbolReference(), new Constant(
199+
fieldType,
200+
readNativeValue(fieldType, rowValue.getRawFieldBlock(field), rowValue.getRawIndex())));
201+
}
202+
203+
return mappingBuilder.buildOrThrow();
204+
}
175205
}

‎core/trino-main/src/test/java/io/trino/sql/planner/TestLogicalPlanner.java‎

Lines changed: 8 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -162,6 +162,7 @@
162162
import static io.trino.sql.planner.assertions.PlanMatchPattern.topNRanking;
163163
import static io.trino.sql.planner.assertions.PlanMatchPattern.unnest;
164164
import static io.trino.sql.planner.assertions.PlanMatchPattern.values;
165+
import static io.trino.sql.planner.assertions.PlanMatchPattern.valuesOf;
165166
import static io.trino.sql.planner.assertions.PlanMatchPattern.windowFunction;
166167
import static io.trino.sql.planner.optimizations.PlanNodeSearcher.searchFrom;
167168
import static io.trino.sql.planner.plan.AggregationNode.Step.FINAL;
@@ -2290,11 +2291,15 @@ public void testValuesCoercions()
22902291
assertPlan("VALUES (TINYINT '1', REAL '1'), (DOUBLE '2', SMALLINT '2')",
22912292
CREATED,
22922293
anyTree(
2293-
values(
2294+
valuesOf(
22942295
ImmutableList.of("field", "field0"),
22952296
ImmutableList.of(
2296-
ImmutableList.of(new Cast(new Constant(TINYINT, 1L), DOUBLE), new Constant(REAL, Reals.toReal(1f))),
2297-
ImmutableList.of(new Constant(DOUBLE, 2.0), new Cast(new Constant(SMALLINT, 2L), REAL))))));
2297+
new Cast(
2298+
new Row(ImmutableList.of(new Constant(TINYINT, 1L), new Constant(REAL, Reals.toReal(1f)))),
2299+
RowType.anonymousRow(DOUBLE, REAL)),
2300+
new Cast(
2301+
new Row(ImmutableList.of(new Constant(DOUBLE, 2.0), new Constant(SMALLINT, 2L))),
2302+
RowType.anonymousRow(DOUBLE, REAL))))));
22982303

22992304
// entry of type other than Row coerced as a whole
23002305
assertPlan("VALUES DOUBLE '1', CAST(ROW(2) AS row(bigint))",

‎core/trino-main/src/test/java/io/trino/sql/planner/assertions/PlanMatchPattern.java‎

Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -793,6 +793,14 @@ public static PlanMatchPattern values(int rowCount)
793793
return values(ImmutableList.of(), nCopies(rowCount, ImmutableList.of()));
794794
}
795795

796+
public static PlanMatchPattern valuesOf(List<String> aliases, List<Expression> expectedRows)
797+
{
798+
return values(
799+
aliasToIndex(aliases),
800+
Optional.of(aliases.size()),
801+
Optional.of(expectedRows));
802+
}
803+
796804
public static PlanMatchPattern values(List<String> aliases, List<List<Expression>> expectedRows)
797805
{
798806
return values(aliases, Optional.of(expectedRows));

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