本文探讨了ABAP编程中OCCURS与INITIAL SIZE关键字的区别。OCCURS为内部表分配内存并创建头部行，而INITIAL SIZE仅分配指定行数的内存。建议使用INITIAL SIZE替代OCCURS。
OCCURS n is obsolete in OO Context and it is advisable to use INITIAL SIZE instead. The difference between the two is that OCCURS n allocates memory to store specified number of rows in the internal table and also creates a header line, whereas INITIAL SIZE allocates memory for the specified number of rows without creating the header line.
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