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Clean up references to SQL92

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In most cases, these were just references to the SQL standard in
general.  In a few cases, a contrast was made between SQL92 and later
standards -- those have been kept unchanged.
This commit is contained in:
Peter Eisentraut
2013-04-20 11:04:41 -04:00
parent 6e481ebff6
commit cc26ea9fe2
25 changed files with 65 additions and 67 deletions
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6
src/backend/utils/adt/numeric.c
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@ -2645,7 +2645,7 @@ numeric_avg(PG_FUNCTION_ARGS)
N = DatumGetNumeric(transdatums[0]);
sumX = DatumGetNumeric(transdatums[1]);
/* SQL92 defines AVG of no values to be NULL */
/* SQL defines AVG of no values to be NULL */
/* N is zero iff no digits (cf. numeric_uminus) */
if (NUMERIC_NDIGITS(N) == 0)
PG_RETURN_NULL();
@ -2824,7 +2824,7 @@ numeric_stddev_pop(PG_FUNCTION_ARGS)
* purposes. (The latter two therefore don't really belong in this file,
* but we keep them here anyway.)
*
* Because SQL92 defines the SUM() of no values to be NULL, not zero,
* Because SQL defines the SUM() of no values to be NULL, not zero,
* the initial condition of the transition data value needs to be NULL. This
* means we can't rely on ExecAgg to automatically insert the first non-null
* data value into the transition data: it doesn't know how to do the type
@ -3046,7 +3046,7 @@ int8_avg(PG_FUNCTION_ARGS)
elog(ERROR, "expected 2-element int8 array");
transdata = (Int8TransTypeData *) ARR_DATA_PTR(transarray);
/* SQL92 defines AVG of no values to be NULL */
/* SQL defines AVG of no values to be NULL */
if (transdata->count == 0)
PG_RETURN_NULL();