Fix rendering of asterisk projection (table.*) for aliased tables.

Closes #1651
Original pull request: #1662

Author: schauder

spring-data-relational/src/main/java/org/springframework/data/relational/core/sql/render/ExpressionVisitor.java

@@ -98,8 +98,16 @@ Delegation enterMatched(Expression segment) {
 			} else {
 				value = segment.toString();
 			}
-		} else if (segment instanceof AsteriskFromTable) {
-			value = NameRenderer.render(context, ((AsteriskFromTable) segment).getTable()) + ".*";
+		} else if (segment instanceof AsteriskFromTable asteriskFromTable) {
+
+			TableLike table = asteriskFromTable.getTable();
+			CharSequence renderedTable;
+			if (table instanceof Aliased aliasedTable) {
+				renderedTable = NameRenderer.render(context, aliasedTable);
+			} else {
+				renderedTable = NameRenderer.render(context, table);
+			}
+			value = renderedTable + ".*";
 		} else if (segment instanceof Cast) {
 
 			CastVisitor visitor = new CastVisitor(context);

spring-data-relational/src/test/java/org/springframework/data/relational/core/sql/render/SelectRendererUnitTests.java

@@ -652,6 +652,17 @@ void notOfNested() {
 		assertThat(sql).isEqualTo("SELECT atable.* FROM atable WHERE NOT (atable.id = 1 AND atable.id = 2)");
 	}
 
+	@Test // GH-1651
+	void asteriskOfAliasedTableUsesAlias() {
+
+		Table employee = SQL.table("employee").as("e");
+		Select select = Select.builder().select(employee.asterisk()).select(employee.column("id")).from(employee).build();
+
+		String rendered = SqlRenderer.toString(select);
+
+		assertThat(rendered).isEqualTo("SELECT e.*, e.id FROM employee e");
+	}
+
 	/**
 	 * Tests the rendering of analytic functions.
 	 */