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Diffstat (limited to 'contrib/ltree/README.ltree')
| -rw-r--r-- | contrib/ltree/README.ltree | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/contrib/ltree/README.ltree b/contrib/ltree/README.ltree index 55b15d0f82..a9d722d051 100644 --- a/contrib/ltree/README.ltree +++ b/contrib/ltree/README.ltree @@ -313,7 +313,7 @@ ltreetest=# select subpath(path,0,2)||'Space'||subpath(path,2) from test where p We could create SQL-function: CREATE FUNCTION ins_label(ltree, int4, text) RETURNS ltree AS 'select subpath($1,0,$2) || $3 || subpath($1,$2);' -LANGUAGE SQL WITH (ISCACHABLE); +LANGUAGE SQL IMMUTABLE; and previous select could be rewritten as: @@ -329,7 +329,7 @@ Or with another arguments: CREATE FUNCTION ins_label(ltree, ltree, text) RETURNS ltree AS 'select subpath($1,0,nlevel($2)) || $3 || subpath($1,nlevel($2));' -LANGUAGE SQL WITH (ISCACHABLE); +LANGUAGE SQL IMMUTABLE; ltreetest=# select ins_label(path,'Top.Science'::ltree,'Space') from test where path <@ 'Top.Science.Astronomy'; ins_label |