Package com.alibaba.druid.sql.ast.statement

Examples of com.alibaba.druid.sql.ast.statement.SQLUnionQuery

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            }
            return;
        }

        if (query instanceof SQLUnionQuery) {
            SQLUnionQuery union = (SQLUnionQuery) query;
            if (union.getOrderBy() != null) {
                union.setOrderBy(null);
            }
            clearOrderBy(union.getLeft());
            clearOrderBy(union.getRight());
        }
    }
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        return select;
    }

    protected SQLUnionQuery createSQLUnionQuery() {
        return new SQLUnionQuery();
    }
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    public SQLSelectQuery queryRest(SQLSelectQuery selectQuery) {
        if (lexer.token() == Token.UNION) {
            lexer.nextToken();

            SQLUnionQuery union = createSQLUnionQuery();
            union.setLeft(selectQuery);

            if (lexer.token() == Token.ALL) {
                union.setOperator(SQLUnionOperator.UNION_ALL);
                lexer.nextToken();
            } else if (lexer.token() == Token.DISTINCT) {
                union.setOperator(SQLUnionOperator.DISTINCT);
                lexer.nextToken();
            }
            SQLSelectQuery right = this.query();
            union.setRight(right);

            return unionRest(union);
        }

        if (lexer.token() == Token.INTERSECT) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.INTERSECT);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        if (lexer.token() == Token.MINUS) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.MINUS);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        return selectQuery;
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        return queryRest(queryBlock);
    }

    public SQLSelectQuery queryRest(SQLSelectQuery selectQuery) {
        if (lexer.token() == (Token.UNION)) {
            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            lexer.nextToken();

            if (lexer.token() == (Token.ALL)) {
                union.setOperator(SQLUnionOperator.UNION_ALL);
                lexer.nextToken();
            } else if (lexer.token() == (Token.DISTINCT)) {
                union.setOperator(SQLUnionOperator.DISTINCT);
                lexer.nextToken();
            }

            SQLSelectQuery right = query();

            union.setRight(right);

            return queryRest(union);
        }

        if (lexer.token() == Token.INTERSECT) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.INTERSECT);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        if (lexer.token() == Token.MINUS) {
            lexer.nextToken();

            SQLUnionQuery union = new SQLUnionQuery();
            union.setLeft(selectQuery);

            union.setOperator(SQLUnionOperator.MINUS);

            SQLSelectQuery right = this.query();
            union.setRight(right);

            return union;
        }

        return selectQuery;
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        boolean isSelectItem = false;
        do {
            x = parent;
            parent = parent.getParent();
            if (parent instanceof SQLUnionQuery) {
                SQLUnionQuery union = (SQLUnionQuery) parent;
                if (union.getRight() == x && hasTableSource(union.getLeft())) {
                    return false;
                }
            } else if (parent instanceof SQLQueryExpr || parent instanceof SQLInSubQueryExpr
                       || parent instanceof SQLExistsExpr) {
                isWhereQueryExpr = isWhereOrHaving(parent);
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    }

    private static boolean hasTableSource(SQLSelectQuery x) {

        if (x instanceof SQLUnionQuery) {
            SQLUnionQuery union = (SQLUnionQuery) x;
            return hasTableSource(union.getLeft()) || hasTableSource(union.getRight());
        } else if (x instanceof SQLSelectQueryBlock) {
            return hasTableSource(((SQLSelectQueryBlock) x).getFrom());
        }

        return false;
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        do {
            SQLSelectQuery query = stack.pop();
            if (query instanceof SQLSelectQueryBlock) {
                groupList.add((SQLSelectQueryBlock) query);
            } else if (query instanceof SQLUnionQuery) {
                SQLUnionQuery unionQuery = (SQLUnionQuery) query;
                stack.push(unionQuery.getLeft());
                stack.push(unionQuery.getRight());
            }
        } while (!stack.empty());
        return groupList;
    }
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    private static boolean hasWhere(SQLSelectQuery selectQuery) {

        if (selectQuery instanceof SQLSelectQueryBlock) {
            return ((SQLSelectQueryBlock) selectQuery).getWhere() != null;
        } else if (selectQuery instanceof SQLUnionQuery) {
            SQLUnionQuery union = (SQLUnionQuery) selectQuery;
            return hasWhere(union.getLeft()) || hasWhere(union.getRight());
        }
        return false;
    }
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                }

            }

            if (parent instanceof SQLUnionQuery) {
                SQLUnionQuery union = (SQLUnionQuery) parent;
                if (union.getRight() == x && hasWhere(union.getLeft())) {
                    return true;
                }
            }

            if (parent instanceof SQLSelectQueryBlock) {
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        return select;
    }

    protected SQLUnionQuery createSQLUnionQuery() {
        return new SQLUnionQuery();
    }
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