From: Mergen Imeev via Tarantool-patches <tarantool-patches@dev.tarantool.org> To: v.shpilevoy@tarantool.org Cc: tarantool-patches@dev.tarantool.org Subject: [Tarantool-patches] [PATCH v2 1/6] sql: introduce sql_func_flags() Date: Wed, 4 Aug 2021 15:58:38 +0300 [thread overview] Message-ID: <3f946be6c0aff87c70ac318ae7d5781350fe20f5.1628081224.git.imeevma@gmail.com> (raw) In-Reply-To: <cover.1628081224.git.imeevma@gmail.com> This function returns a set of parameters for the function with the given name. This function is used when we do not need to call a function, but we need its parameters. In addition, this function will allow us to split the parameters between those that are the same for all implementations, and the parameters, the value of which is implementation-dependent. Needed for #6105 Part of #6106 --- src/box/sql/expr.c | 9 +++------ src/box/sql/func.c | 12 ++++++++++++ src/box/sql/sqlInt.h | 10 ++++++++++ 3 files changed, 25 insertions(+), 6 deletions(-) diff --git a/src/box/sql/expr.c b/src/box/sql/expr.c index 3772596d6..0ba42ed71 100644 --- a/src/box/sql/expr.c +++ b/src/box/sql/expr.c @@ -328,11 +328,8 @@ sql_expr_coll(Parse *parse, Expr *p, bool *is_explicit_coll, uint32_t *coll_id, if (op == TK_FUNCTION) { uint32_t arg_count = p->x.pList == NULL ? 0 : p->x.pList->nExpr; - struct func *func = - sql_func_by_signature(p->u.zToken, arg_count); - if (func == NULL) - break; - if (sql_func_flag_is_set(func, SQL_FUNC_DERIVEDCOLL) && + uint32_t flags = sql_func_flags(p->u.zToken); + if (((flags & SQL_FUNC_DERIVEDCOLL) != 0) && arg_count > 0) { /* * Now we use quite straightforward @@ -342,7 +339,7 @@ sql_expr_coll(Parse *parse, Expr *p, bool *is_explicit_coll, uint32_t *coll_id, * built-in functions: trim, upper, * lower, replace, substr. */ - assert(func->def->returns == FIELD_TYPE_STRING); + assert(p->type == FIELD_TYPE_STRING); p = p->x.pList->a->pExpr; continue; } diff --git a/src/box/sql/func.c b/src/box/sql/func.c index 6ca852dec..28d383293 100644 --- a/src/box/sql/func.c +++ b/src/box/sql/func.c @@ -2655,6 +2655,18 @@ static struct { }, }; +uint32_t +sql_func_flags(const char *name) +{ + struct func *func = func_by_name(name, strlen(name)); + if (func == NULL || func->def->language != FUNC_LANGUAGE_SQL_BUILTIN) + return 0; + uint32_t flags = ((struct func_sql_builtin *)func)->flags; + if (func->def->aggregate == FUNC_AGGREGATE_GROUP) + flags |= SQL_FUNC_AGG; + return flags; +} + static struct func_vtab func_sql_builtin_vtab; struct func * diff --git a/src/box/sql/sqlInt.h b/src/box/sql/sqlInt.h index 115c52f96..97b7a2401 100644 --- a/src/box/sql/sqlInt.h +++ b/src/box/sql/sqlInt.h @@ -1186,6 +1186,8 @@ struct type_def { * SQL_FUNC_LENGTH == OPFLAG_LENGTHARG * SQL_FUNC_TYPEOF == OPFLAG_TYPEOFARG */ +/** Function is one of aggregate functions. */ +#define SQL_FUNC_AGG 0x0001 #define SQL_FUNC_LIKE 0x0004 /* Candidate for the LIKE optimization */ #define SQL_FUNC_NEEDCOLL 0x0020 /* sqlGetFuncCollSeq() might be called. * The flag is set when the collation @@ -4372,6 +4374,14 @@ sql_func_flag_is_set(struct func *func, uint16_t flag) struct func * sql_func_by_signature(const char *name, int argc); +/** + * Return the parameters of the function with the given name. If the function + * with the given name does not exist, or the function is not a built-in SQL + * function, 0 is returned, which means no parameters have been set. + */ +uint32_t +sql_func_flags(const char *name); + /** * Generate VDBE code to halt execution with correct error if * the object with specified key is already present (or doesn't -- 2.25.1
next prev parent reply other threads:[~2021-08-04 12:59 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-04 12:58 [Tarantool-patches] [PATCH v2 0/6] Remove SQL built-in functions from _func Mergen Imeev via Tarantool-patches 2021-08-04 12:58 ` Mergen Imeev via Tarantool-patches [this message] 2021-08-05 22:14 ` [Tarantool-patches] [PATCH v2 1/6] sql: introduce sql_func_flags() Vladislav Shpilevoy via Tarantool-patches 2021-08-06 19:41 ` Mergen Imeev via Tarantool-patches 2021-08-04 12:58 ` [Tarantool-patches] [PATCH v2 2/6] sql: introduce sql_func_find() Mergen Imeev via Tarantool-patches 2021-08-05 22:15 ` Vladislav Shpilevoy via Tarantool-patches 2021-08-06 19:42 ` Mergen Imeev via Tarantool-patches 2021-08-04 12:58 ` [Tarantool-patches] [PATCH v2 3/6] sql: remove SQL built-in functions from _func Mergen Imeev via Tarantool-patches 2021-08-05 22:17 ` Vladislav Shpilevoy via Tarantool-patches 2021-08-06 19:45 ` Mergen Imeev via Tarantool-patches 2021-08-04 12:58 ` [Tarantool-patches] [PATCH v2 4/6] alter: parse data dictionary version Mergen Imeev via Tarantool-patches 2021-08-05 22:17 ` Vladislav Shpilevoy via Tarantool-patches 2021-08-06 19:47 ` Mergen Imeev via Tarantool-patches 2021-08-04 12:58 ` [Tarantool-patches] [PATCH v2 5/6] alter: disallow creation of SQL built-in function Mergen Imeev via Tarantool-patches 2021-08-05 22:18 ` Vladislav Shpilevoy via Tarantool-patches 2021-08-06 19:54 ` Mergen Imeev via Tarantool-patches 2021-08-04 12:58 ` [Tarantool-patches] [PATCH v2 6/6] sql: remove unnecessary function initialization Mergen Imeev via Tarantool-patches 2021-08-06 19:59 ` Mergen Imeev via Tarantool-patches 2021-08-08 12:08 ` [Tarantool-patches] [PATCH v2 0/6] Remove SQL built-in functions from _func Vladislav Shpilevoy via Tarantool-patches 2021-08-09 7:18 Mergen Imeev via Tarantool-patches 2021-08-09 7:18 ` [Tarantool-patches] [PATCH v2 1/6] sql: introduce sql_func_flags() Mergen Imeev via Tarantool-patches
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