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SQL: Adjust the precision and scale for drivers (#40467) 

Fix #40357

(cherry picked from commit 1557d77b07bbeef99604857c1ca824e20771c283)
This commit is contained in:
Costin Leau 2019-03-27 14:14:06 +02:00 committed by Costin Leau
parent ebcb925afb
commit de5f924daa
16 changed files with 62 additions and 62 deletions
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6
docs/reference/sql/language/data-types.asciidoc
View File

@ -21,9 +21,9 @@ s|SQL precision
| <<number, `long`>> | long | BIGINT | 19
| <<number, `double`>> | double | DOUBLE | 15
| <<number, `float`>> | float | REAL | 7
| <<number, `half_float`>> | half_float | FLOAT | 16
| <<number, `scaled_float`>> | scaled_float | FLOAT | 19
| <<keyword, `keyword`>> | keyword | VARCHAR | based on <<ignore-above>>
| <<number, `half_float`>> | half_float | FLOAT | 3
| <<number, `scaled_float`>> | scaled_float | DOUBLE | 15
| <<keyword, `keyword`>> | keyword | VARCHAR | 32,766
| <<text, `text`>> | text | VARCHAR | 2,147,483,647
| <<binary, `binary`>> | binary | VARBINARY | 2,147,483,647
| <<date, `date`>> | datetime | TIMESTAMP | 24

12
x-pack/plugin/sql/qa/security/src/test/java/org/elasticsearch/xpack/sql/qa/security/RestSqlSecurityIT.java
View File

@ -29,10 +29,10 @@ import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.SQL_QUERY_REST_ENDPOINT;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.columnInfo;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.mode;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.randomMode;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.SQL_QUERY_REST_ENDPOINT;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.empty;
import static org.hamcrest.Matchers.equalTo;
@ -101,9 +101,9 @@ public class RestSqlSecurityIT extends SqlSecurityTestCase {
String mode = randomMode();
Map<String, Object> expected = new HashMap<>(3);
expected.put("columns", Arrays.asList(
columnInfo(mode, "column", "keyword", JDBCType.VARCHAR, 0),
columnInfo(mode, "type", "keyword", JDBCType.VARCHAR, 0),
columnInfo(mode, "mapping", "keyword", JDBCType.VARCHAR, 0)));
columnInfo(mode, "column", "keyword", JDBCType.VARCHAR, 32766),
columnInfo(mode, "type", "keyword", JDBCType.VARCHAR, 32766),
columnInfo(mode, "mapping", "keyword", JDBCType.VARCHAR, 32766)));
List<List<String>> rows = new ArrayList<>(columns.size());
for (Map.Entry<String, List<String>> column : columns.entrySet()) {
List<String> cols = new ArrayList<>();
@ -120,8 +120,8 @@ public class RestSqlSecurityIT extends SqlSecurityTestCase {
public void expectShowTables(List<String> tables, String user) throws Exception {
String mode = randomMode();
List<Object> columns = new ArrayList<>();
columns.add(columnInfo(mode, "name", "keyword", JDBCType.VARCHAR, 0));
columns.add(columnInfo(mode, "type", "keyword", JDBCType.VARCHAR, 0));
columns.add(columnInfo(mode, "name", "keyword", JDBCType.VARCHAR, 32766));
columns.add(columnInfo(mode, "type", "keyword", JDBCType.VARCHAR, 32766));
Map<String, Object> expected = new HashMap<>();
expected.put("columns", columns);
List<List<String>> rows = new ArrayList<>();

12
x-pack/plugin/sql/qa/security/src/test/java/org/elasticsearch/xpack/sql/qa/security/UserFunctionIT.java
View File

@ -34,10 +34,10 @@ import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.SQL_QUERY_REST_ENDPOINT;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.columnInfo;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.mode;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.randomMode;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.SQL_QUERY_REST_ENDPOINT;
public class UserFunctionIT extends ESRestTestCase {
@ -81,7 +81,7 @@ public class UserFunctionIT extends ESRestTestCase {
Map<String, Object> expected = new HashMap<>();
expected.put("columns", Arrays.asList(
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 0)));
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 32766)));
expected.put("rows", Arrays.asList(Arrays.asList(randomUserName)));
Map<String, Object> actual = runSql(randomUserName, mode, SQL);
@ -97,7 +97,7 @@ public class UserFunctionIT extends ESRestTestCase {
Map<String, Object> expected = new HashMap<>();
expected.put("columns", Arrays.asList(
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 0)));
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 32766)));
expected.put("rows", Arrays.asList(Arrays.asList(randomUserName),
Arrays.asList(randomUserName),
Arrays.asList(randomUserName)));
@ -114,7 +114,7 @@ public class UserFunctionIT extends ESRestTestCase {
Map<String, Object> expected = new HashMap<>();
expected.put("columns", Arrays.asList(
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 0)));
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 32766)));
expected.put("rows", Collections.<ArrayList<String>>emptyList());
String anotherRandomUserName = randomValueOtherThan(randomUserName, () -> randomAlphaOfLengthBetween(1, 15));
Map<String, Object> actual = runSql(randomUserName, mode, SQL + " FROM test WHERE USER()='" + anotherRandomUserName + "' LIMIT 3");
@ -129,7 +129,7 @@ public class UserFunctionIT extends ESRestTestCase {
Map<String, Object> expected = new HashMap<>();
expected.put("columns", Arrays.asList(
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 0)));
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 32766)));
expected.put("rows", Arrays.asList(Arrays.asList(randomlyPickedUsername)));
Map<String, Object> actual = runSql(randomlyPickedUsername, mode, SQL);
@ -147,7 +147,7 @@ public class UserFunctionIT extends ESRestTestCase {
Map<String, Object> expected = new HashMap<>();
expected.put("columns", Arrays.asList(
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 0)));
columnInfo(mode, "USER()", "keyword", JDBCType.VARCHAR, 32766)));
expected.put("rows", Arrays.asList(Arrays.asList(randomUserName),
Arrays.asList(randomUserName),
Arrays.asList(randomUserName)));

8
x-pack/plugin/sql/qa/src/main/java/org/elasticsearch/xpack/sql/qa/SqlProtocolTestCase.java
View File

@ -28,10 +28,10 @@ import java.util.List;
import java.util.Locale;
import java.util.Map;
import static org.elasticsearch.xpack.sql.proto.Mode.CLI;
import static org.elasticsearch.xpack.sql.proto.Protocol.SQL_QUERY_REST_ENDPOINT;
import static org.elasticsearch.xpack.sql.proto.RequestInfo.CLIENT_IDS;
import static org.elasticsearch.xpack.sql.qa.rest.RestSqlTestCase.mode;
import static org.elasticsearch.xpack.sql.proto.Mode.CLI;
public abstract class SqlProtocolTestCase extends ESRestTestCase {
@ -62,7 +62,7 @@ public abstract class SqlProtocolTestCase extends ESRestTestCase {
}
public void testTextualType() throws IOException {
assertQuery("SELECT 'abc123'", "'abc123'", "keyword", "abc123", 0);
assertQuery("SELECT 'abc123'", "'abc123'", "keyword", "abc123", 32766);
}
public void testDateTimes() throws IOException {
@ -141,7 +141,7 @@ public abstract class SqlProtocolTestCase extends ESRestTestCase {
List<Object> row = (ArrayList<Object>) rows.get(0);
assertEquals(1, row.size());
// from xcontent we can get float or double, depending on the conversion
// from xcontent we can get float or double, depending on the conversion
// method of the specific xcontent format implementation
if (columnValue instanceof Float && row.get(0) instanceof Double) {
assertEquals(columnValue, (float)((Number) row.get(0)).doubleValue());
@ -209,7 +209,7 @@ public abstract class SqlProtocolTestCase extends ESRestTestCase {
return XContentHelper.convertToMap(SmileXContent.smileXContent, content, false);
}
default:
return XContentHelper.convertToMap(JsonXContent.jsonXContent, content, false);
return XContentHelper.convertToMap(JsonXContent.jsonXContent, content, false);
}
}
}

10
x-pack/plugin/sql/qa/src/main/java/org/elasticsearch/xpack/sql/qa/rest/RestSqlTestCase.java
View File

@ -74,7 +74,7 @@ public abstract class RestSqlTestCase extends ESRestTestCase implements ErrorsTe
String mode = randomMode();
boolean columnar = randomBoolean();
expected.put("columns", singletonList(columnInfo(mode, "test", "text", JDBCType.VARCHAR, 0)));
expected.put("columns", singletonList(columnInfo(mode, "test", "text", JDBCType.VARCHAR, Integer.MAX_VALUE)));
if (columnar) {
expected.put("values", singletonList(Arrays.asList("test", "test")));
} else {
@ -118,7 +118,7 @@ public abstract class RestSqlTestCase extends ESRestTestCase implements ErrorsTe
Map<String, Object> expected = new HashMap<>();
if (i == 0) {
expected.put("columns", Arrays.asList(
columnInfo(mode, "text", "text", JDBCType.VARCHAR, 0),
columnInfo(mode, "text", "text", JDBCType.VARCHAR, Integer.MAX_VALUE),
columnInfo(mode, "number", "long", JDBCType.BIGINT, 20),
columnInfo(mode, "s", "double", JDBCType.DOUBLE, 25),
columnInfo(mode, "SCORE()", "float", JDBCType.REAL, 15)));
@ -184,7 +184,7 @@ public abstract class RestSqlTestCase extends ESRestTestCase implements ErrorsTe
Map<String, Object> expected = new HashMap<>();
boolean columnar = randomBoolean();
expected.put("columns", Arrays.asList(
columnInfo(mode, "name", "text", JDBCType.VARCHAR, 0),
columnInfo(mode, "name", "text", JDBCType.VARCHAR, Integer.MAX_VALUE),
columnInfo(mode, "score", "long", JDBCType.BIGINT, 20),
columnInfo(mode, "SCORE()", "float", JDBCType.REAL, 15)));
if (columnar) {
@ -427,7 +427,7 @@ public abstract class RestSqlTestCase extends ESRestTestCase implements ErrorsTe
"{\"test\":\"bar\"}");
Map<String, Object> expected = new HashMap<>();
expected.put("columns", singletonList(columnInfo(mode, "test", "text", JDBCType.VARCHAR, 0)));
expected.put("columns", singletonList(columnInfo(mode, "test", "text", JDBCType.VARCHAR, Integer.MAX_VALUE)));
expected.put("rows", singletonList(singletonList("foo")));
assertResponse(expected, runSql(new StringEntity("{\"query\":\"SELECT * FROM test\", " +
"\"filter\":{\"match\": {\"test\": \"foo\"}}" + mode(mode) + "}",
@ -442,7 +442,7 @@ public abstract class RestSqlTestCase extends ESRestTestCase implements ErrorsTe
Map<String, Object> expected = new HashMap<>();
expected.put("columns", Arrays.asList(
columnInfo(mode, "test", "text", JDBCType.VARCHAR, 0),
columnInfo(mode, "test", "text", JDBCType.VARCHAR, Integer.MAX_VALUE),
columnInfo(mode, "param", "integer", JDBCType.INTEGER, 11)
));
if (columnar) {

4
x-pack/plugin/sql/qa/src/main/resources/setup_mock_metadata_get_columns.sql
View File

@ -23,12 +23,12 @@ CREATE TABLE mock (
IS_AUTOINCREMENT VARCHAR,
IS_GENERATEDCOLUMN VARCHAR
) AS
SELECT null, 'test1', 'name', 12, 'TEXT', 0, 2147483647, null, null,
SELECT null, 'test1', 'name', 12, 'TEXT', 2147483647, 2147483647, null, null,
1, -- columnNullable
null, null, 12, 0, 2147483647, 1, 'YES', null, null, null, null, 'NO', 'NO'
FROM DUAL
UNION ALL
SELECT null, 'test1', 'name.keyword', 12, 'KEYWORD', 0, 2147483647, null, null,
SELECT null, 'test1', 'name.keyword', 12, 'KEYWORD', 32766, 2147483647, null, null,
1, -- columnNullable
null, null, 12, 0, 2147483647, 1, 'YES', null, null, null, null, 'NO', 'NO'
FROM DUAL

2
x-pack/plugin/sql/sql-proto/src/main/java/org/elasticsearch/xpack/sql/proto/ColumnInfo.java
View File

@ -119,7 +119,7 @@ public class ColumnInfo implements ToXContentObject {
return false;
}
ColumnInfo that = (ColumnInfo) o;
return displaySize == that.displaySize &&
return Objects.equals(displaySize, that.displaySize) &&
Objects.equals(table, that.table) &&
Objects.equals(name, that.name) &&
Objects.equals(esType, that.esType);

3
x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/plan/logical/command/sys/SysTypes.java
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@ -82,8 +82,7 @@ public class SysTypes extends Command {
.sorted(Comparator.comparing((DataType t) -> t.sqlType.getVendorTypeNumber()).thenComparing(DataType::sqlName))
.map(t -> asList(t.toString(),
t.sqlType.getVendorTypeNumber(),
//https://docs.microsoft.com/en-us/sql/odbc/reference/appendixes/column-size?view=sql-server-2017
t.defaultPrecision,
DataTypes.precision(t),
"'",
"'",
null,

12
x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/type/DataType.java
View File

@ -36,19 +36,19 @@ public enum DataType {
DOUBLE( "double", JDBCType.DOUBLE, Double.BYTES, 15, 25, false, true, true),
// 24 bits defaultPrecision - 24*log10(2) =~ 7 (7.22)
FLOAT( "float", JDBCType.REAL, Float.BYTES, 7, 15, false, true, true),
HALF_FLOAT( "half_float", JDBCType.FLOAT, Double.BYTES, 16, 25, false, true, true),
HALF_FLOAT( "half_float", JDBCType.FLOAT, Float.BYTES, 3, 25, false, true, true),
// precision is based on long
SCALED_FLOAT( "scaled_float", JDBCType.FLOAT, Double.BYTES, 19, 25, false, true, true),
KEYWORD( "keyword", JDBCType.VARCHAR, Integer.MAX_VALUE, 256, 0, false, false, true),
TEXT( "text", JDBCType.VARCHAR, Integer.MAX_VALUE, Integer.MAX_VALUE, 0, false, false, false),
SCALED_FLOAT( "scaled_float", JDBCType.DOUBLE, Long.BYTES, 15, 25, false, true, true),
KEYWORD( "keyword", JDBCType.VARCHAR, Integer.MAX_VALUE, 32766, 32766, false, false, true),
TEXT( "text", JDBCType.VARCHAR, Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE, false, false, false),
OBJECT( "object", JDBCType.STRUCT, -1, 0, 0, false, false, false),
NESTED( "nested", JDBCType.STRUCT, -1, 0, 0, false, false, false),
BINARY( "binary", JDBCType.VARBINARY, -1, Integer.MAX_VALUE, 0, false, false, false),
BINARY( "binary", JDBCType.VARBINARY, -1, Integer.MAX_VALUE, Integer.MAX_VALUE, false, false, false),
DATE( JDBCType.DATE, Long.BYTES, 24, 24, false, false, true),
// since ODBC and JDBC interpret precision for Date as display size
// the precision is 23 (number of chars in ISO8601 with millis) + Z (the UTC timezone)
// see https://github.com/elastic/elasticsearch/issues/30386#issuecomment-386807288
DATETIME( "date", JDBCType.TIMESTAMP, Long.BYTES, 24, 24, false, false, true),
DATETIME( "date", JDBCType.TIMESTAMP, Long.BYTES, 3, 24, false, false, true),
//
// specialized types
//

42
x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/type/DataTypes.java
View File

@ -175,7 +175,7 @@ public final class DataTypes {
}
// https://github.com/elastic/elasticsearch/issues/30386
// https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlgettypeinfo-function?view=sql-server-2017
// https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlgettypeinfo-function
public static Integer metaSqlDateTimeSub(DataType t) {
if (t == DATETIME) {
// ODBC SQL_CODE_TIMESTAMP
@ -185,37 +185,30 @@ public final class DataTypes {
return 0;
}
// https://docs.microsoft.com/en-us/sql/odbc/reference/appendixes/decimal-digits?view=sql-server-2017
public static Short metaSqlMinimumScale(DataType t) {
// TODO: return info for HALF/SCALED_FLOATS (should be based on field not type)
if (t == DATETIME) {
return Short.valueOf((short) 3);
}
if (t.isInteger()) {
return Short.valueOf((short) 0);
}
// minimum scale?
if (t.isRational()) {
return Short.valueOf((short) 0);
}
return null;
return metaSqlSameScale(t);
}
public static Short metaSqlMaximumScale(DataType t) {
// TODO: return info for HALF/SCALED_FLOATS (should be based on field not type)
if (t == DATETIME) {
return Short.valueOf((short) 3);
}
return metaSqlSameScale(t);
}
// https://docs.microsoft.com/en-us/sql/odbc/reference/appendixes/decimal-digits
// https://github.com/elastic/elasticsearch/issues/40357
// since the scale is fixed, minimum and maximum should return the same value
// hence why this method exists
private static Short metaSqlSameScale(DataType t) {
// TODO: return info for SCALED_FLOATS (should be based on field not type)
if (t.isInteger()) {
return Short.valueOf((short) 0);
}
if (t.isRational()) {
if (t.isDateBased() || t.isRational()) {
return Short.valueOf((short) t.defaultPrecision);
}
return null;
}
// https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlgettypeinfo-function?view=sql-server-2017
// https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlgettypeinfo-function
public static Integer metaSqlRadix(DataType t) {
// RADIX - Determines how numbers returned by COLUMN_SIZE and DECIMAL_DIGITS should be interpreted.
// 10 means they represent the number of decimal digits allowed for the column.
@ -223,4 +216,13 @@ public final class DataTypes {
// null means radix is not applicable for the given type.
return t.isInteger() ? Integer.valueOf(10) : (t.isRational() ? Integer.valueOf(2) : null);
}
//https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlgettypeinfo-function#comments
//https://docs.microsoft.com/en-us/sql/odbc/reference/appendixes/column-size
public static Integer precision(DataType t) {
if (t.isNumeric()) {
return t.defaultPrecision;
}
return t.displaySize;
}
}

2
x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/action/SqlActionIT.java
View File

@ -33,7 +33,7 @@ public class SqlActionIT extends AbstractSqlIntegTestCase {
assertThat(response.columns(), hasSize(2));
int dataIndex = dataBeforeCount ? 0 : 1;
int countIndex = dataBeforeCount ? 1 : 0;
assertEquals(new ColumnInfo("", "data", "text", 0), response.columns().get(dataIndex));
assertEquals(new ColumnInfo("", "data", "text", 2147483647), response.columns().get(dataIndex));
assertEquals(new ColumnInfo("", "count", "long", 20), response.columns().get(countIndex));
assertThat(response.rows(), hasSize(2));

2
x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/plan/logical/command/sys/SysParserTests.java
View File

@ -60,7 +60,7 @@ public class SysParserTests extends ESTestCase {
public void testSysTypes() throws Exception {
Command cmd = sql("SYS TYPES").v1();
List<String> names = asList("BYTE", "LONG", "BINARY", "NULL", "INTEGER", "SHORT", "HALF_FLOAT", "SCALED_FLOAT", "FLOAT", "DOUBLE",
List<String> names = asList("BYTE", "LONG", "BINARY", "NULL", "INTEGER", "SHORT", "HALF_FLOAT", "FLOAT", "DOUBLE", "SCALED_FLOAT",
"KEYWORD", "TEXT", "IP", "BOOLEAN", "DATE", "DATETIME",
"INTERVAL_YEAR", "INTERVAL_MONTH", "INTERVAL_DAY", "INTERVAL_HOUR", "INTERVAL_MINUTE", "INTERVAL_SECOND",
"INTERVAL_YEAR_TO_MONTH", "INTERVAL_DAY_TO_HOUR", "INTERVAL_DAY_TO_MINUTE", "INTERVAL_DAY_TO_SECOND",

2
x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/plan/logical/command/sys/SysTypesTests.java
View File

@ -43,7 +43,7 @@ public class SysTypesTests extends ESTestCase {
public void testSysTypes() {
Command cmd = sql("SYS TYPES").v1();
List<String> names = asList("BYTE", "LONG", "BINARY", "NULL", "INTEGER", "SHORT", "HALF_FLOAT", "SCALED_FLOAT", "FLOAT", "DOUBLE",
List<String> names = asList("BYTE", "LONG", "BINARY", "NULL", "INTEGER", "SHORT", "HALF_FLOAT", "FLOAT", "DOUBLE", "SCALED_FLOAT",
"KEYWORD", "TEXT", "IP", "BOOLEAN", "DATE", "DATETIME",
"INTERVAL_YEAR", "INTERVAL_MONTH", "INTERVAL_DAY", "INTERVAL_HOUR", "INTERVAL_MINUTE", "INTERVAL_SECOND",
"INTERVAL_YEAR_TO_MONTH", "INTERVAL_DAY_TO_HOUR", "INTERVAL_DAY_TO_MINUTE", "INTERVAL_DAY_TO_SECOND",

2
x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/type/DataTypesTests.java
View File

@ -55,7 +55,7 @@ public class DataTypesTests extends ESTestCase {
public void testMetaMinimumScale() {
assertEquals(Short.valueOf((short) 3), metaSqlMinimumScale(DATETIME));
assertEquals(Short.valueOf((short) 0), metaSqlMinimumScale(LONG));
assertEquals(Short.valueOf((short) 0), metaSqlMinimumScale(FLOAT));
assertEquals(Short.valueOf((short) FLOAT.defaultPrecision), metaSqlMaximumScale(FLOAT));
assertNull(metaSqlMinimumScale(KEYWORD));
}

2
x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/type/TypesTests.java
View File

@ -81,7 +81,7 @@ public class TypesTests extends ESTestCase {
EsField field = mapping.get("date");
assertThat(field.getDataType(), is(DATETIME));
assertThat(field.isAggregatable(), is(true));
assertThat(field.getPrecision(), is(24));
assertThat(field.getPrecision(), is(3));
}
public void testDateNoFormat() {

3
x-pack/plugin/sql/src/test/resources/mapping-nested.json
View File

@ -10,8 +10,7 @@
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword",
"ignore_above" : 256
"type" : "keyword"
}
}
},