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Copy collencoding in CREATE COLLATION / FROM
This command used to compute the collencoding entry like when a completely new collation is created. But for example when copying the "C" collation, this would then result in a collation that has a collencoding entry for the current database encoding rather than -1, thus not making an exact copy. This has probably no practical impact, but making this change keeps the catalog contents neat. Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
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@ -64,7 +64,7 @@ DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_e
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char *collcollate = NULL;
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char *collctype = NULL;
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char *collproviderstr = NULL;
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int collencoding;
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int collencoding = 0;
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char collprovider = 0;
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char *collversion = NULL;
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Oid newoid;
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@ -126,6 +126,7 @@ DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_e
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collcollate = pstrdup(NameStr(((Form_pg_collation) GETSTRUCT(tp))->collcollate));
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collctype = pstrdup(NameStr(((Form_pg_collation) GETSTRUCT(tp))->collctype));
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collprovider = ((Form_pg_collation) GETSTRUCT(tp))->collprovider;
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collencoding = ((Form_pg_collation) GETSTRUCT(tp))->collencoding;
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ReleaseSysCache(tp);
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@ -185,12 +186,15 @@ DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_e
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(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
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errmsg("parameter \"lc_ctype\" must be specified")));
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if (collprovider == COLLPROVIDER_ICU)
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collencoding = -1;
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else
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if (!fromEl)
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{
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collencoding = GetDatabaseEncoding();
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check_encoding_locale_matches(collencoding, collcollate, collctype);
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if (collprovider == COLLPROVIDER_ICU)
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collencoding = -1;
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else
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{
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collencoding = GetDatabaseEncoding();
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check_encoding_locale_matches(collencoding, collcollate, collctype);
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}
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}
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if (!collversion)
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