druid SQLCreateSequenceStatement解析缺陷

uz75evzq  于 2022-10-27  发布在  Druid
关注(0)|答案(1)|浏览(193)

版本号

1.2.6

问题

SQL解析失败

复现代码

SQLUtils.parseSingleStatement("CREATE SEQUENCE table_name_id_seq as integer", DbType.postgresql) -- error
 SQLUtils.parseSingleStatement("CREATE SEQUENCE table_name_id_seq ", DbType.postgresql) -- ok

定位问题

  • 源文件: com.alibaba.druid.sql.parser.SQLStatementParser#parseCreateSequence
  • 待修复代码片段
for (;;) {
            if (lexer.token() == Token.START || lexer.identifierEquals(FnvHash.Constants.START)) {
                lexer.nextToken();
                accept(Token.WITH);
                stmt.setStartWith(this.exprParser.expr());
                continue;
            } else if (lexer.identifierEquals(FnvHash.Constants.INCREMENT)) {
                lexer.nextToken();
                accept(Token.BY);
                stmt.setIncrementBy(this.exprParser.expr());
                continue;
            } else if (lexer.token() == Token.CACHE || lexer.identifierEquals(FnvHash.Constants.CACHE)) {
                lexer.nextToken();
                stmt.setCache(Boolean.TRUE);

                if (lexer.token() == Token.LITERAL_INT) {
                    stmt.setCacheValue(this.exprParser.primary());
                }
                continue;
            } else if (lexer.token == Token.WITH) {
                lexer.nextToken();
                accept(Token.CACHE);
                stmt.setCache(true);
                continue;
            } else if (lexer.token() == Token.NOCACHE || lexer.identifierEquals(FnvHash.Constants.NOCACHE)) {
                lexer.nextToken();
                stmt.setCache(Boolean.FALSE);
                continue;
            } else if (lexer.token() == Token.ORDER) {
                lexer.nextToken();
                stmt.setOrder(Boolean.TRUE);
                continue;
            } else if (lexer.identifierEquals("NOORDER")) {
                lexer.nextToken();
                stmt.setOrder(Boolean.FALSE);
                continue;
            } else if (lexer.identifierEquals("CYCLE")) {
                lexer.nextToken();
                stmt.setCycle(Boolean.TRUE);
                continue;
            } else if (lexer.identifierEquals(FnvHash.Constants.NOCYCLE)) {
                lexer.nextToken();
                stmt.setCycle(Boolean.FALSE);
                continue;
            } else if (lexer.identifierEquals("MINVALUE")) {
                lexer.nextToken();
                stmt.setMinValue(this.exprParser.expr());
                continue;
            } else if (lexer.identifierEquals("MAXVALUE")) {
                lexer.nextToken();
                stmt.setMaxValue(this.exprParser.expr());
                continue;
            } else if (lexer.identifierEquals("NOMAXVALUE")) {
                lexer.nextToken();
                stmt.setNoMaxValue(true);
                continue;
            } else if (lexer.identifierEquals("NOMINVALUE")) {
                lexer.nextToken();
                stmt.setNoMinValue(true);
                continue;
            }
           // fixme 需要考虑AS token的情况
            break;
        }

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