compound statement tests (#1545)

Author: rathboma

src/test/resources/net/sf/jsqlparser/statement/select/oracle-tests/compound_statements01.sql

@@ -0,0 +1,32 @@
+---
+-- #%L
+-- JSQLParser library
+-- %%
+-- Copyright (C) 2004 - 2022 JSQLParser
+-- %%
+-- Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+-- #L%
+---
+      DECLARE
+        PK_NAME VARCHAR(200);
+
+      BEGIN
+        EXECUTE IMMEDIATE ('CREATE SEQUENCE "untitled_table3_seq"');
+
+      SELECT
+        cols.column_name INTO PK_NAME
+      FROM
+        all_constraints cons,
+        all_cons_columns cols
+      WHERE
+        cons.constraint_type = 'P'
+        AND cons.constraint_name = cols.constraint_name
+        AND cons.owner = cols.owner
+        AND cols.table_name = 'untitled_table3';
+
+      execute immediate (
+        'create or replace trigger "untitled_table3_autoinc_trg"  BEFORE INSERT on "untitled_table3"  for each row  declare  checking number := 1;  begin    if (:new."' || PK_NAME || '" is null) then      while checking >= 1 loop        select "untitled_table3_seq".nextval into :new."' || PK_NAME || '" from dual;        select count("' || PK_NAME || '") into checking from "untitled_table3"        where "' || PK_NAME || '" = :new."' || PK_NAME || '";      end loop;    end if;  end;'
+      );
+      END
+
+--@FAILURE: Encountered unexpected token: "PK_NAME" <S_IDENTIFIER> recorded first on May 27, 2022, 10:27:41 PM

src/test/resources/net/sf/jsqlparser/statement/select/oracle-tests/compound_statements02.sql

@@ -0,0 +1,30 @@
+---
+-- #%L
+-- JSQLParser library
+-- %%
+-- Copyright (C) 2004 - 2022 JSQLParser
+-- %%
+-- Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+-- #L%
+---
+DECLARE
+          n_emp_id EMPLOYEES.EMPLOYEE_ID%TYPE := &emp_id1;
+        BEGIN
+          DECLARE
+            n_emp_id employees.employee_id%TYPE := &emp_id2;
+            v_name   employees.first_name%TYPE;
+          BEGIN
+            SELECT first_name, CASE foo WHEN 'a' THEN 1 ELSE 2 END CASE as other
+            INTO v_name
+            FROM employees
+            WHERE employee_id = n_emp_id;
+
+            DBMS_OUTPUT.PUT_LINE('First name of employee ' || n_emp_id ||
+                                              ' is ' || v_name);
+            EXCEPTION
+              WHEN no_data_found THEN
+                DBMS_OUTPUT.PUT_LINE('Employee ' || n_emp_id || ' not found');
+          END;
+        END
+
+--@FAILURE: Encountered unexpected token: "n_emp_id" <S_IDENTIFIER> recorded first on May 27, 2022, 10:29:48 PM

src/test/resources/net/sf/jsqlparser/statement/select/oracle-tests/compound_statements03.sql

@@ -0,0 +1,17 @@
+---
+-- #%L
+-- JSQLParser library
+-- %%
+-- Copyright (C) 2004 - 2022 JSQLParser
+-- %%
+-- Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+-- #L%
+---
+BEGIN
+      SELECT
+      cols.column_name INTO :variable
+      FROM
+      example_table;
+      END
+
+--@FAILURE: Encountered unexpected token: "BEGIN" "BEGIN" recorded first on May 27, 2022, 10:29:48 PM