sharpetronics/PostgreSQL
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-03 00:02:26 -04:00
Code Issues Projects Releases Wiki Activity

Copy a Param's location field when replacing it with a Const.

Browse Source 
This allows Param substitution to produce just the same result
as writing a constant value literally would have done.  While
it hardly matters so far as the current core code is concerned,
extensions might take more interest in node location fields.

Julien Rouhaud

Discussion: https://postgr.es/m/20170311220932.GJ15188@nol.local
This commit is contained in:
Tom Lane 2021-07-14 14:15:12 -04:00
parent c203dcddf9
commit be850f1822
1 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
src/backend/optimizer/util/clauses.c
View File

@ -2329,6 +2329,7 @@ eval_const_expressions_mutator(Node *node,
int16 typLen;
bool typByVal;
Datum pval;
Const *con;
get_typlenbyval(param->paramtype,
&typLen, &typByVal);
@ -2336,13 +2337,15 @@ eval_const_expressions_mutator(Node *node,
pval = prm->value;
else
pval = datumCopy(prm->value, typByVal, typLen);
return (Node *) makeConst(param->paramtype,
param->paramtypmod,
param->paramcollid,
(int) typLen,
pval,
prm->isnull,
typByVal);
con = makeConst(param->paramtype,
param->paramtypmod,
param->paramcollid,
(int) typLen,
pval,
prm->isnull,
typByVal);
con->location = param->location;
return (Node *) con;
}
}
}