fixed SQL insert to table with name eq keyword

Author: chernser

jdbc-v2/src/main/java/com/clickhouse/jdbc/internal/ParsedPreparedStatement.java

@@ -211,11 +211,18 @@ private void appendParameter(int startIndex) {
         }
     }
 
+    @Override
+    public void enterTableExprIdentifier(ClickHouseParser.TableExprIdentifierContext ctx) {
+        if (ctx.tableIdentifier() != null) {
+            this.table = SqlParser.unquoteIdentifier(ctx.tableIdentifier().getText());
+        }
+    }
+
     @Override
     public void enterInsertStmt(ClickHouseParser.InsertStmtContext ctx) {
         ClickHouseParser.TableIdentifierContext tableId = ctx.tableIdentifier();
         if (tableId != null) {
-            this.table = tableId.identifier().IDENTIFIER().getText();
+            this.table = SqlParser.unquoteIdentifier(tableId.getText());
         }
 
         ClickHouseParser.ColumnsClauseContext columns = ctx.columnsClause();

jdbc-v2/src/test/java/com/clickhouse/jdbc/internal/SqlParserTest.java

@@ -294,6 +294,8 @@ public Object[][] testMiscStmtDp() {
             {"SELECT * FROM table test WHERE ts = ?", 1},
             {"SELECT * FROM table view WHERE ts = ?", 1},
             {"SELECT * FROM table primary WHERE ts = ?", 1},
+            {"insert into events (s) values ('a')", 0},
+            {"insert into `events` (s) values ('a')", 0},
         };
     }
 }