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Add FOREACH IN ARRAY looping to plpgsql.

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(I'm not entirely sure that we've finished bikeshedding the syntax details,
but the functionality seems OK.)

Pavel Stehule, reviewed by Stephen Frost and Tom Lane
This commit is contained in:
Tom Lane
2011-02-16 01:52:04 -05:00
parent 4695da5ae9
commit 6e02755b22
10 changed files with 899 additions and 15 deletions
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7
src/include/utils/array.h
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@ -114,6 +114,9 @@ typedef struct ArrayMapState
ArrayMetaState ret_extra;
} ArrayMapState;
/* ArrayIteratorData is private in arrayfuncs.c */
typedef struct ArrayIteratorData *ArrayIterator;
/*
* fmgr macros for array objects
*/
@ -254,6 +257,10 @@ extern Datum makeArrayResult(ArrayBuildState *astate,
extern Datum makeMdArrayResult(ArrayBuildState *astate, int ndims,
int *dims, int *lbs, MemoryContext rcontext, bool release);
extern ArrayIterator array_create_iterator(ArrayType *arr, int slice_ndim);
extern bool array_iterate(ArrayIterator iterator, Datum *value, bool *isnull);
extern void array_free_iterator(ArrayIterator iterator);
/*
* prototypes for functions defined in arrayutils.c
*/