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Fix handling of collation in SQL-language functions.

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Ensure that parameter symbols receive collation from the function's
resolved input collation, and fix inlining to behave properly.

BTW, this commit lays about 90% of the infrastructure needed to support
use of argument names in SQL functions.  Parsing of parameters is now
done via the parser-hook infrastructure ... we'd just need to supply
a column-ref hook ...
This commit is contained in:
Tom Lane
2011-03-24 20:30:14 -04:00
parent a432e2783b
commit 27dc7e240b
7 changed files with 303 additions and 76 deletions
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5
src/backend/parser/parse_param.c
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@ -231,6 +231,11 @@ variable_coerce_param_hook(ParseState *pstate, Param *param,
*/
param->paramtypmod = -1;
/*
* This module always sets a Param's collation to be the default for
* its datatype. If that's not what you want, you should be using
* the more general parser substitution hooks.
*/
param->paramcollid = get_typcollation(param->paramtype);
/* Use the leftmost of the param's and coercion's locations */