sqlparser/seata-sqlparser-druid/src/main/java/org/apache/seata/sqlparser/druid/kingbase/KingbaseSelectForUpdateRecognizer.java [99:109]:
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    private SQLSelectQueryBlock getSelect() {
        SQLSelect select = ast.getSelect();
        if (select == null) {
            throw new SQLParsingException("should never happen!");
        }
        SQLSelectQueryBlock selectQueryBlock = select.getQueryBlock();
        if (selectQueryBlock == null) {
            throw new SQLParsingException("should never happen!");
        }
        return selectQueryBlock;
    }
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sqlparser/seata-sqlparser-druid/src/main/java/org/apache/seata/sqlparser/druid/oscar/OscarSelectForUpdateRecognizer.java [99:109]:
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    private SQLSelectQueryBlock getSelect() {
        SQLSelect select = ast.getSelect();
        if (select == null) {
            throw new SQLParsingException("should never happen!");
        }
        SQLSelectQueryBlock selectQueryBlock = select.getQueryBlock();
        if (selectQueryBlock == null) {
            throw new SQLParsingException("should never happen!");
        }
        return selectQueryBlock;
    }
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