feat: allow file names as Table supporting CSV or Parquet files

Signed-off-by: Andreas Reichel <[email protected]>
Signed-off-by: manticore-projects <[email protected]>

Author: manticore-projects

build.gradle

@@ -189,7 +189,7 @@ test {
 
     // set heap size for the test JVM(s)
     minHeapSize = "128m"
-    maxHeapSize = "1G"
+    maxHeapSize = "4G"
 
     jacoco {
         excludes = ['net/sf/jsqlparser/parser/CCJSqlParserTokenManager']

gradle.properties

@@ -1,6 +1,6 @@
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx2G -XX:MaxMetaspaceSize=1024m  -XX:ThreadStackSize=4096 -XX:CompilerThreadStackSize=4096 -Dfile.encoding=UTF-8 -XX:+HeapDumpOnOutOfMemoryError
+org.gradle.jvmargs=-Xmx4G -Dfile.encoding=UTF-8 -XX:+HeapDumpOnOutOfMemoryError
 
 org.gradle.caching=false
 

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -2116,15 +2116,22 @@ Table Table() #TableName :
 {
     //String serverName = null, databaseName = null, schemaName = null, tableName = null;
     ObjectNames data = null;
+    Token fileNameToken = null;
 }
 {
     data = RelObjectNames()
-
     {
         Table table = new Table(data.getNames());
 		linkAST(table,jjtThis);
         return table;
     }
+    |
+    fileNameToken = <S_CHAR_LITERAL>
+    {
+        Table table = new Table(fileNameToken.image);
+        linkAST(table,jjtThis);
+        return table;
+    }
 }
 
 Table TableWithAlias():

src/test/java/net/sf/jsqlparser/statement/select/DuckDBTest.java

@@ -0,0 +1,19 @@
+package net.sf.jsqlparser.statement.select;
+
+import net.sf.jsqlparser.JSQLParserException;
+import net.sf.jsqlparser.schema.Table;
+import net.sf.jsqlparser.test.TestUtils;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class DuckDBTest {
+
+    @Test
+    void testFileTable() throws JSQLParserException {
+        String sqlStr = "SELECT * FROM '/tmp/test.parquet'";
+        PlainSelect select = (PlainSelect) TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
+        Table table = (Table) select.getFromItem();
+
+        Assertions.assertEquals("'/tmp/test.parquet'", table.getName());
+    }
+}