diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt index 73067e09af1..7c702dfb305 100644 --- a/solr/CHANGES.txt +++ b/solr/CHANGES.txt @@ -214,6 +214,8 @@ Bug Fixes * SOLR-13089: Fix lsof edge cases in the solr CLI script (Martijn Koster via janhoy) +* SOLR-11746: Fixed existence query support for numeric point fields. (Kai Chan, hossman, Houston Putman) + Other Changes --------------------- diff --git a/solr/contrib/analysis-extras/src/java/org/apache/solr/schema/ICUCollationField.java b/solr/contrib/analysis-extras/src/java/org/apache/solr/schema/ICUCollationField.java index f723a25b24c..eaf2aedc601 100644 --- a/solr/contrib/analysis-extras/src/java/org/apache/solr/schema/ICUCollationField.java +++ b/solr/contrib/analysis-extras/src/java/org/apache/solr/schema/ICUCollationField.java @@ -266,7 +266,7 @@ public class ICUCollationField extends FieldType { } @Override - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { String f = field.getName(); BytesRef low = part1 == null ? null : getCollationKey(f, part1); BytesRef high = part2 == null ? null : getCollationKey(f, part2); diff --git a/solr/core/src/java/org/apache/solr/parser/SolrQueryParserBase.java b/solr/core/src/java/org/apache/solr/parser/SolrQueryParserBase.java index d98fe095181..b45a61250f2 100644 --- a/solr/core/src/java/org/apache/solr/parser/SolrQueryParserBase.java +++ b/solr/core/src/java/org/apache/solr/parser/SolrQueryParserBase.java @@ -1187,10 +1187,14 @@ public abstract class SolrQueryParserBase extends QueryBuilder { // called from parser protected Query getWildcardQuery(String field, String termStr) throws SyntaxError { checkNullField(field); - // *:* -> MatchAllDocsQuery + if ("*".equals(termStr)) { if ("*".equals(field) || getExplicitField() == null) { + // '*:*' and '*' -> MatchAllDocsQuery return newMatchAllDocsQuery(); + } else { + // 'foo:*' -> empty prefix query + return getPrefixQuery(field, ""); } } diff --git a/solr/core/src/java/org/apache/solr/schema/AbstractSpatialFieldType.java b/solr/core/src/java/org/apache/solr/schema/AbstractSpatialFieldType.java index 404dae2bd9b..0fe3429d284 100644 --- a/solr/core/src/java/org/apache/solr/schema/AbstractSpatialFieldType.java +++ b/solr/core/src/java/org/apache/solr/schema/AbstractSpatialFieldType.java @@ -316,7 +316,7 @@ public abstract class AbstractSpatialFieldType extend } @Override - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { if (!minInclusive || !maxInclusive) throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Both sides of spatial range query must be inclusive: " + field.getName()); Point p1 = SpatialUtils.parsePointSolrException(part1, ctx); diff --git a/solr/core/src/java/org/apache/solr/schema/CollationField.java b/solr/core/src/java/org/apache/solr/schema/CollationField.java index b8285aa0797..3b5d2b8d931 100644 --- a/solr/core/src/java/org/apache/solr/schema/CollationField.java +++ b/solr/core/src/java/org/apache/solr/schema/CollationField.java @@ -236,7 +236,7 @@ public class CollationField extends FieldType { } @Override - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { String f = field.getName(); BytesRef low = part1 == null ? null : getCollationKey(f, part1); BytesRef high = part2 == null ? null : getCollationKey(f, part2); diff --git a/solr/core/src/java/org/apache/solr/schema/CurrencyFieldType.java b/solr/core/src/java/org/apache/solr/schema/CurrencyFieldType.java index 4e59212f9ab..f042dbfd6b2 100644 --- a/solr/core/src/java/org/apache/solr/schema/CurrencyFieldType.java +++ b/solr/core/src/java/org/apache/solr/schema/CurrencyFieldType.java @@ -251,7 +251,7 @@ public class CurrencyFieldType extends FieldType implements SchemaAware, Resourc CurrencyValue valueDefault; valueDefault = value.convertTo(provider, defaultCurrency); - return getRangeQuery(parser, field, valueDefault, valueDefault, true, true); + return getRangeQueryInternal(parser, field, valueDefault, valueDefault, true, true); } /** @@ -317,7 +317,7 @@ public class CurrencyFieldType extends FieldType implements SchemaAware, Resourc } @Override - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, final boolean minInclusive, final boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, final boolean minInclusive, final boolean maxInclusive) { final CurrencyValue p1 = CurrencyValue.parse(part1, defaultCurrency); final CurrencyValue p2 = CurrencyValue.parse(part2, defaultCurrency); @@ -327,10 +327,10 @@ public class CurrencyFieldType extends FieldType implements SchemaAware, Resourc ": range queries only supported when upper and lower bound have same currency."); } - return getRangeQuery(parser, field, p1, p2, minInclusive, maxInclusive); + return getRangeQueryInternal(parser, field, p1, p2, minInclusive, maxInclusive); } - public Query getRangeQuery(QParser parser, SchemaField field, final CurrencyValue p1, final CurrencyValue p2, final boolean minInclusive, final boolean maxInclusive) { + private Query getRangeQueryInternal(QParser parser, SchemaField field, final CurrencyValue p1, final CurrencyValue p2, final boolean minInclusive, final boolean maxInclusive) { String currencyCode = (p1 != null) ? p1.getCurrencyCode() : (p2 != null) ? p2.getCurrencyCode() : defaultCurrency; diff --git a/solr/core/src/java/org/apache/solr/schema/DateRangeField.java b/solr/core/src/java/org/apache/solr/schema/DateRangeField.java index b7c3329302c..67aa9fd9092 100644 --- a/solr/core/src/java/org/apache/solr/schema/DateRangeField.java +++ b/solr/core/src/java/org/apache/solr/schema/DateRangeField.java @@ -143,7 +143,7 @@ public class DateRangeField extends AbstractSpatialPrefixTreeFieldType + * If the field has docValues enabled, and the range query has '*'s or nulls on either side, then a {@link org.apache.lucene.search.DocValuesFieldExistsQuery} is returned. + * + * Sub-classes should override the "getSpecializedRangeQuery" method to provide their own range query implementation. They should strive to + * handle nulls in part1 and/or part2 as well as unequal minInclusive and maxInclusive parameters gracefully. + * + * + * @param parser the {@link org.apache.solr.search.QParser} calling the method + * @param field the schema field + * @param part1 the lower boundary of the range, nulls are allowed. + * @param part2 the upper boundary of the range, nulls are allowed + * @param minInclusive whether the minimum of the range is inclusive or not + * @param maxInclusive whether the maximum of the range is inclusive or not + * @return a Query instance to perform range search according to given parameters + * + */ + public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + if (field.hasDocValues() && part1 == null && part2 == null) { + return new DocValuesFieldExistsQuery(field.getName()); + } else { + return getSpecializedRangeQuery(parser, field, part1, part2, minInclusive, maxInclusive); + } + } + /** * Returns a Query instance for doing range searches on this field type. {@link org.apache.solr.search.SolrQueryParser} * currently passes part1 and part2 as null if they are '*' respectively. minInclusive and maxInclusive are both true @@ -867,20 +897,21 @@ public abstract class FieldType extends FieldProperties { * @return a Query instance to perform range search according to given parameters * */ - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { // TODO: change these all to use readableToIndexed/bytes instead (e.g. for unicode collation) final BytesRef miValue = part1 == null ? null : new BytesRef(toInternal(part1)); final BytesRef maxValue = part2 == null ? null : new BytesRef(toInternal(part2)); + if (field.hasDocValues() && !field.indexed()) { return SortedSetDocValuesField.newSlowRangeQuery( - field.getName(), - miValue, maxValue, - minInclusive, maxInclusive); + field.getName(), + miValue, maxValue, + minInclusive, maxInclusive); } else { SolrRangeQuery rangeQuery = new SolrRangeQuery( - field.getName(), - miValue, maxValue, - minInclusive, maxInclusive); + field.getName(), + miValue, maxValue, + minInclusive, maxInclusive); return rangeQuery; } } @@ -891,7 +922,6 @@ public abstract class FieldType extends FieldProperties { * @param field The {@link org.apache.solr.schema.SchemaField} of the field to search * @param externalVal The String representation of the value to search * @return The {@link org.apache.lucene.search.Query} instance. This implementation returns a {@link org.apache.lucene.search.TermQuery} but overriding queries may not - * */ public Query getFieldQuery(QParser parser, SchemaField field, String externalVal) { BytesRefBuilder br = new BytesRefBuilder(); diff --git a/solr/core/src/java/org/apache/solr/schema/LatLonType.java b/solr/core/src/java/org/apache/solr/schema/LatLonType.java index 88ab20b9f10..ecebd13373c 100644 --- a/solr/core/src/java/org/apache/solr/schema/LatLonType.java +++ b/solr/core/src/java/org/apache/solr/schema/LatLonType.java @@ -103,7 +103,7 @@ public class LatLonType extends AbstractSubTypeFieldType implements SpatialQuery @Override - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { Point p1 = SpatialUtils.parsePointSolrException(part1, SpatialContext.GEO); Point p2 = SpatialUtils.parsePointSolrException(part2, SpatialContext.GEO); diff --git a/solr/core/src/java/org/apache/solr/schema/PointField.java b/solr/core/src/java/org/apache/solr/schema/PointField.java index 91a342cfa80..cae0f57ca55 100644 --- a/solr/core/src/java/org/apache/solr/schema/PointField.java +++ b/solr/core/src/java/org/apache/solr/schema/PointField.java @@ -165,8 +165,8 @@ public abstract class PointField extends NumericFieldType { boolean maxInclusive); @Override - public Query getRangeQuery(QParser parser, SchemaField field, String min, String max, boolean minInclusive, - boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String min, String max, boolean minInclusive, + boolean maxInclusive) { if (!field.indexed() && field.hasDocValues()) { return getDocValuesRangeQuery(parser, field, min, max, minInclusive, maxInclusive); } else if (field.indexed() && field.hasDocValues()) { @@ -222,6 +222,9 @@ public abstract class PointField extends NumericFieldType { @Override public Query getPrefixQuery(QParser parser, SchemaField sf, String termStr) { + if ("".equals(termStr)) { + return super.getPrefixQuery(parser, sf, termStr); + } throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Can't run prefix queries on numeric fields"); } diff --git a/solr/core/src/java/org/apache/solr/schema/PointType.java b/solr/core/src/java/org/apache/solr/schema/PointType.java index e088e7ff31d..a67b0ae5402 100644 --- a/solr/core/src/java/org/apache/solr/schema/PointType.java +++ b/solr/core/src/java/org/apache/solr/schema/PointType.java @@ -128,7 +128,7 @@ public class PointType extends CoordinateFieldType implements SpatialQueryable { /** * Care should be taken in calling this with higher order dimensions for performance reasons. */ - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { //Query could look like: [x1,y1 TO x2,y2] for 2 dimension, but could look like: [x1,y1,z1 TO x2,y2,z2], and can be extrapolated to n-dimensions //thus, this query essentially creates a box, cube, etc. String[] p1 = parseCommaSeparatedList(part1, dimension); diff --git a/solr/core/src/java/org/apache/solr/schema/TextField.java b/solr/core/src/java/org/apache/solr/schema/TextField.java index 0d44eb7293a..3f8a793ff6f 100644 --- a/solr/core/src/java/org/apache/solr/schema/TextField.java +++ b/solr/core/src/java/org/apache/solr/schema/TextField.java @@ -158,7 +158,7 @@ public class TextField extends FieldType { } @Override - public Query getRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String part1, String part2, boolean minInclusive, boolean maxInclusive) { Analyzer multiAnalyzer = getMultiTermAnalyzer(); BytesRef lower = analyzeMultiTerm(field.getName(), part1, multiAnalyzer); BytesRef upper = analyzeMultiTerm(field.getName(), part2, multiAnalyzer); diff --git a/solr/core/src/java/org/apache/solr/schema/TrieField.java b/solr/core/src/java/org/apache/solr/schema/TrieField.java index 90b27e459d4..c3f636e5de6 100644 --- a/solr/core/src/java/org/apache/solr/schema/TrieField.java +++ b/solr/core/src/java/org/apache/solr/schema/TrieField.java @@ -298,10 +298,10 @@ public class TrieField extends NumericFieldType { } @Override - public Query getRangeQuery(QParser parser, SchemaField field, String min, String max, boolean minInclusive, boolean maxInclusive) { + protected Query getSpecializedRangeQuery(QParser parser, SchemaField field, String min, String max, boolean minInclusive, boolean maxInclusive) { if (field.multiValued() && field.hasDocValues() && !field.indexed()) { // for the multi-valued dv-case, the default rangeimpl over toInternal is correct - return super.getRangeQuery(parser, field, min, max, minInclusive, maxInclusive); + return super.getSpecializedRangeQuery(parser, field, min, max, minInclusive, maxInclusive); } int ps = precisionStep; Query query; diff --git a/solr/core/src/test-files/solr/collection1/conf/schema12.xml b/solr/core/src/test-files/solr/collection1/conf/schema12.xml index 9438f16dc74..4eae0ec18d9 100644 --- a/solr/core/src/test-files/solr/collection1/conf/schema12.xml +++ b/solr/core/src/test-files/solr/collection1/conf/schema12.xml @@ -686,23 +686,33 @@ - + + + + + + + + - + - + + + + diff --git a/solr/core/src/test/org/apache/solr/search/QueryEqualityTest.java b/solr/core/src/test/org/apache/solr/search/QueryEqualityTest.java index 324b0e466e6..d4495621983 100644 --- a/solr/core/src/test/org/apache/solr/search/QueryEqualityTest.java +++ b/solr/core/src/test/org/apache/solr/search/QueryEqualityTest.java @@ -16,6 +16,7 @@ */ package org.apache.solr.search; +import java.util.Arrays; import java.util.HashSet; import java.util.Map; import java.util.Set; @@ -94,6 +95,23 @@ public class QueryEqualityTest extends SolrTestCaseJ4 { " +apache +solr"); } + public void testQueryLuceneAllDocsWithField() throws Exception { + // for all "primative" types, 'foo:*' should be functionally equivilent to "foo:[* TO *]" + // whatever implementation/optimizations exist for one syntax, should exist for the other syntax as well + // (regardless of docValues, multivalued, etc...) + for (String field : Arrays.asList("foo_sI", "foo_sS", "foo_s1", "foo_s", + "t_foo", "tv_foo", "tv_mv_foo", + "foo_b", + "foo_i", "foo_is", "foo_i_dvo", + "foo_l", "foo_ll", "foo_l_dvo", + "foo_f", "foo_f_dvo", + "foo_d", + "foo_dt")) { + + assertQueryEquals("lucene", field + ":*", field + ":[* TO *]"); + } + } + public void testQueryPrefix() throws Exception { SolrQueryRequest req = req("myField","foo_s"); try { diff --git a/solr/core/src/test/org/apache/solr/search/TestSolrQueryParser.java b/solr/core/src/test/org/apache/solr/search/TestSolrQueryParser.java index 87cbc95c9d5..429fb29d586 100644 --- a/solr/core/src/test/org/apache/solr/search/TestSolrQueryParser.java +++ b/solr/core/src/test/org/apache/solr/search/TestSolrQueryParser.java @@ -17,6 +17,7 @@ package org.apache.solr.search; import java.util.Arrays; +import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; @@ -28,6 +29,7 @@ import org.apache.lucene.search.BooleanClause; import org.apache.lucene.search.BooleanQuery; import org.apache.lucene.search.BoostQuery; import org.apache.lucene.search.ConstantScoreQuery; +import org.apache.lucene.search.DocValuesFieldExistsQuery; import org.apache.lucene.search.IndexSearcher; import org.apache.lucene.search.PointInSetQuery; import org.apache.lucene.search.Query; @@ -35,6 +37,7 @@ import org.apache.lucene.search.TermInSetQuery; import org.apache.lucene.search.TermQuery; import org.apache.solr.SolrTestCaseJ4; import org.apache.solr.common.SolrException; +import org.apache.solr.common.SolrInputDocument; import org.apache.solr.common.params.MapSolrParams; import org.apache.solr.common.params.ModifiableSolrParams; import org.apache.solr.common.params.SolrParams; @@ -44,7 +47,9 @@ import org.apache.solr.metrics.SolrMetricManager; import org.apache.solr.parser.QueryParser; import org.apache.solr.query.FilterQuery; import org.apache.solr.request.SolrQueryRequest; +import org.apache.solr.schema.IndexSchema; import org.apache.solr.schema.SchemaField; +import org.junit.AfterClass; import org.junit.BeforeClass; import org.junit.Test; @@ -59,6 +64,13 @@ public class TestSolrQueryParser extends SolrTestCaseJ4 { createIndex(); } + private static final List HAS_VAL_FIELDS = new ArrayList(31); + + @AfterClass + public static void afterClass() throws Exception { + HAS_VAL_FIELDS.clear(); + } + public static void createIndex() { String v; v = "how now brown cow"; @@ -73,12 +85,55 @@ public class TestSolrQueryParser extends SolrTestCaseJ4 { assertU(adoc("id", "13", "eee_s", "'balance'", "rrr_s", "/leading_slash")); assertU(adoc("id", "20", "syn", "wifi ATM")); - + + { // make a doc that has a value in *lots* of fields that no other doc has + SolrInputDocument doc = sdoc("id", "999"); + + // numbers... + for (String t : Arrays.asList("i", "l", "f", "d")) { + for (String s : Arrays.asList("", "s", "_dv", "s_dv", "_dvo")) { + final String f = "has_val_" + t + s; + HAS_VAL_FIELDS.add(f); + doc.addField(f, "42"); + } + } + // boolean... + HAS_VAL_FIELDS.add("has_val_b"); + doc.addField("has_val_b", "false"); + // dates (and strings/text -- they don't care about the format)... + for (String s : Arrays.asList("dt", "s", "s1", "t")) { + final String f = "has_val_" + s; + HAS_VAL_FIELDS.add(f); + doc.addField(f, "2019-01-12T00:00:00Z"); + } + assertU(adoc(doc)); + } + assertU(adoc("id", "30", "shingle23", "A B X D E")); assertU(commit()); } + public void testDocsWithValuesInField() throws Exception { + assertEquals("someone changed the test setup of HAS_VAL_FIELDS, w/o updating the sanity check", + 25, HAS_VAL_FIELDS.size()); + for (String f : HAS_VAL_FIELDS) { + // for all of these fields, these 2 syntaxes should be functionally equivilent + // in matching the one doc that contains these fields + for (String q : Arrays.asList( f + ":*", f + ":[* TO *]" )) { + assertJQ(req("q", q) + , "/response/numFound==1" + , "/response/docs/[0]/id=='999'" + ); + // the same syntaxes should be valid even if no doc has the field... + assertJQ(req("q", "bogus___" + q) + , "/response/numFound==0" + ); + + } + } + } + @Test public void testPhrase() { // "text" field's type has WordDelimiterGraphFilter (WDGFF) and autoGeneratePhraseQueries=true @@ -1135,14 +1190,14 @@ public class TestSolrQueryParser extends SolrTestCaseJ4 { "is_dv", "fs_dv", "ds_dv", "ls_dv", "i_dvo", "f_dvo", "d_dvo", "l_dvo", }; - + for (String suffix:fieldSuffix) { //Good queries qParser = QParser.getParser("foo_" + suffix + ":(1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 25)", req); qParser.setIsFilter(true); qParser.getQuery(); } - + for (String suffix:fieldSuffix) { qParser = QParser.getParser("foo_" + suffix + ":(1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 NOT_A_NUMBER)", req); qParser.setIsFilter(true); // this may change in the future @@ -1150,7 +1205,39 @@ public class TestSolrQueryParser extends SolrTestCaseJ4 { assertEquals(SolrException.ErrorCode.BAD_REQUEST.code, e.code()); assertTrue("Unexpected exception: " + e.getMessage(), e.getMessage().contains("Invalid Number: NOT_A_NUMBER")); } - - + + + } + + @Test + public void testFieldExistsQueries() throws SyntaxError { + SolrQueryRequest req = req(); + IndexSchema indexSchema = h.getCore().getLatestSchema(); + String[] fieldSuffix = new String[] { + "ti", "tf", "td", "tl", "tdt", + "pi", "pf", "pd", "pl", "pdt", + "i", "f", "d", "l", "dt", "s", "b", + "is", "fs", "ds", "ls", "dts", "ss", "bs", + "i_dv", "f_dv", "d_dv", "l_dv", "dt_dv", "s_dv", "b_dv", + "is_dv", "fs_dv", "ds_dv", "ls_dv", "dts_dv", "ss_dv", "bs_dv", + "i_dvo", "f_dvo", "d_dvo", "l_dvo", "dt_dvo", + "t" + }; + String[] existenceQueries = new String[] { + "*", "[* TO *]" + }; + + for (String existenceQuery : existenceQueries) { + for (String suffix : fieldSuffix) { + String field = "foo_" + suffix; + String query = field + ":" + existenceQuery; + QParser qParser = QParser.getParser(query, req); + if (indexSchema.getField(field).hasDocValues()) { + assertTrue("Field has docValues, so existence query \"" + query + "\" should return DocValuesFieldExistsQuery", qParser.getQuery() instanceof DocValuesFieldExistsQuery); + } else { + assertFalse("Field doesn't have docValues, so existence query \"" + query + "\" should not return DocValuesFieldExistsQuery", qParser.getQuery() instanceof DocValuesFieldExistsQuery); + } + } + } } } diff --git a/solr/solr-ref-guide/src/the-standard-query-parser.adoc b/solr/solr-ref-guide/src/the-standard-query-parser.adoc index 8507c0abd60..7bff1d6720d 100644 --- a/solr/solr-ref-guide/src/the-standard-query-parser.adoc +++ b/solr/solr-ref-guide/src/the-standard-query-parser.adoc @@ -322,10 +322,10 @@ Comments may be nested. Solr's standard query parser originated as a variation of Lucene's "classic" QueryParser. It diverges in the following ways: -* A `*` may be used for either or both endpoints to specify an open-ended range query +* A `*` may be used for either or both endpoints to specify an open-ended range query, or by itself as an existence query. ** `field:[* TO 100]` finds all field values less than or equal to 100 ** `field:[100 TO *]` finds all field values greater than or equal to 100 -** `field:[* TO *]` matches all documents with the field +** `field:*` or `field:[* TO *]` matches all documents where the field exists * Pure negative queries (all clauses prohibited) are allowed (only as a top-level clause) ** `-inStock:false` finds all field values where inStock is not false ** `-field:[* TO *]` finds all documents without a value for field