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Merged
staticlibs merged 1 commit into from
Feb 24, 2026
+96 −10
Merged

Support filtering in LibreOffice Base (1.5) #575

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92 changes: 82 additions & 10 deletions src/main/java/org/duckdb/DuckDBDatabaseMetaData.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,16 +2,9 @@

import static java.lang.System.lineSeparator;

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.RowIdLifetime;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.sql.Statement;
import java.sql.Types;
import java.sql.*;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

Expand Down Expand Up @@ -1109,7 +1102,62 @@ public ResultSet getCrossReference(String parentCatalog, String parentSchema, St

@Override
public ResultSet getTypeInfo() throws SQLException {
throw new SQLFeatureNotSupportedException("getTypeInfo");
List<TypeInfoEntry> entries = Arrays.asList(new TypeInfoEntry("BOOLEAN", Types.BIT, typePredBasic),
new TypeInfoEntry("TINYINT", Types.TINYINT, typePredBasic),
new TypeInfoEntry("SMALLINT", Types.SMALLINT, typePredBasic),
new TypeInfoEntry("INTEGER", Types.INTEGER, typePredBasic),
new TypeInfoEntry("BIGINT", Types.BIGINT, typePredBasic),
new TypeInfoEntry("BIGINT", Types.BIGINT, typePredBasic),
new TypeInfoEntry("FLOAT", Types.FLOAT, typePredBasic),
new TypeInfoEntry("REAL", Types.REAL, typePredBasic),
new TypeInfoEntry("DOUBLE", Types.DOUBLE, typePredBasic),
new TypeInfoEntry("DECIMAL", Types.NUMERIC, typePredBasic, 0, 38),
new TypeInfoEntry("DECIMAL", Types.DECIMAL, typePredBasic, 0, 38),
new TypeInfoEntry("VARCHAR", Types.CHAR, typePredChar),
new TypeInfoEntry("VARCHAR", Types.VARCHAR, typePredChar),
new TypeInfoEntry("VARCHAR", Types.LONGVARCHAR, typePredChar),
new TypeInfoEntry("DATE", Types.DATE, typePredBasic),
new TypeInfoEntry("TIME", Types.TIME, typePredBasic),
new TypeInfoEntry("TIMESTAMP", Types.TIMESTAMP, typePredBasic),
new TypeInfoEntry("BLOB", Types.BINARY, typePredChar),
new TypeInfoEntry("BLOB", Types.VARBINARY, typePredChar),
new TypeInfoEntry("BLOB", Types.LONGVARBINARY, typePredChar),
new TypeInfoEntry("NULL", Types.LONGVARBINARY, typePredBasic));

StringBuilder sb = new StringBuilder(QUERY_SB_DEFAULT_CAPACITY);
boolean first = true;
for (TypeInfoEntry en : entries) {
if (first) {
sb.append("SELECT").append(lineSeparator());
first = false;
} else {
sb.append("UNION ALL SELECT").append(lineSeparator());
}
sb.append(" '" + en.name + "'::VARCHAR AS TYPE_NAME").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" " + en.sqlType + "::INTEGER AS DATA_TYPE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" 0::INTEGER AS PRECISION").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" NULL::VARCHAR AS LITERAL_PREFIX").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" NULL::VARCHAR AS LITERAL_SUFFIX").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" NULL::VARCHAR AS CREATE_PARAMS").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" " + typeNullableUnknown + "::SMALLINT AS NULLABLE")
.append(TRAILING_COMMA)
.append(lineSeparator());
sb.append(" TRUE::BOOL AS CASE_SENSITIVE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" " + en.searchable + "::SMALLINT AS SEARCHABLE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" FALSE::BOOL AS UNSIGNED_ATTRIBUTE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" FALSE::BOOL AS FIXED_PREC_SCALE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" FALSE::BOOL AS AUTO_INCREMENT").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" NULL::VARCHAR AS LOCAL_TYPE_NAME").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" 0::SMALLINT AS MINIMUM_SCALE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" 0::SMALLINT AS MAXIMUM_SCALE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" 0::INTEGER AS SQL_DATA_TYPE").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" 0::INTEGER AS SQL_DATETIME_SUB").append(TRAILING_COMMA).append(lineSeparator());
sb.append(" 10::INTEGER AS NUM_PREC_RADIX").append(TRAILING_COMMA).append(lineSeparator());
}

PreparedStatement ps = conn.prepareStatement(sb.toString());
ps.closeOnCompletion();
return ps.executeQuery();
}

@Override
Expand Down Expand Up @@ -1492,4 +1540,28 @@ private static String nullPatternToWildcard(String pattern) {
}
return pattern;
}

private static class TypeInfoEntry {
final String name;
final int sqlType;
final int searchable;
final int precision;
final int scale;

private TypeInfoEntry(String name, int sqlType, int searchable) {
this.name = name;
this.sqlType = sqlType;
this.searchable = searchable;
this.precision = 0;
this.scale = 0;
}

public TypeInfoEntry(String name, int sqlType, int searchable, int precision, int scale) {
this.name = name;
this.sqlType = sqlType;
this.searchable = searchable;
this.precision = precision;
this.scale = scale;
}
}
}
3 changes: 3 additions & 0 deletions src/main/java/org/duckdb/DuckDBDriver.java
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,9 @@ public Connection connect(String url, Properties info) throws SQLException {
// to be established.
props.remove("path");

// LibreOffice Base adds this option with value 'simple'
props.remove("Type");

// DuckLake connection
if (pp.shortUrl.startsWith(DUCKLAKE_URL_PREFIX)) {
setDefaultOptionValue(props, JDBC_PIN_DB, true);
Expand Down
11 changes: 11 additions & 0 deletions src/test/java/org/duckdb/TestMetadata.java
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Expand Up @@ -1015,4 +1015,15 @@ public static void test_medatada_cross_reference() throws Exception {
}
}
}

public static void test_metadata_type_info() throws Exception {
try (Connection conn = DriverManager.getConnection(JDBC_URL); ResultSet rs = conn.getMetaData().getTypeInfo()) {
// static table, not produced by engine, only checking the count
int count = 0;
while (rs.next()) {
count += 1;
}
assertEquals(count, 21);
}
}
}