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Fri, 01 Oct 2021 15:48:52 +0300 To: v.shpilevoy@tarantool.org Cc: tarantool-patches@dev.tarantool.org Date: Fri, 1 Oct 2021 15:48:52 +0300 Message-Id: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit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eAau8CL7WIMRKs4sN3D3tLDjz0dLbV79QFUyzQ2Ujvy7cMT6pYYqY16iZVKkSc3dCLJ7zSJH7+u4VD18S7Vl4ZUrpaVfd2+vE6kuoey4m4VkSEu530nj6fImhcD4MUrOEAnl0W826KZ9Q+tr5ycPtXkTV4k65bRjmOUUP8cvGozZ33TWg5HZplvhhXbhDGzqmQDTd6OAevLeAnq3Ra9uf7zvY2zzsIhlcp/Y7m53TZgf2aB4JOg4gkr2biojJNmX3owDPmFFUA2nIx2hNg== X-Mailru-Sender: 689FA8AB762F7393C37E3C1AEC41BA5D4556AE5DF45FD59335CE90300C01A94D83D72C36FC87018B9F80AB2734326CD2FB559BB5D741EB96352A0ABBE4FDA4210A04DAD6CC59E33667EA787935ED9F1B X-Mras: Ok Subject: [Tarantool-patches] [PATCH v4 11/16] sql: refactor COUNT() function X-BeenThere: tarantool-patches@dev.tarantool.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Tarantool development patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Mergen Imeev via Tarantool-patches Reply-To: imeevma@tarantool.org Errors-To: tarantool-patches-bounces@dev.tarantool.org Sender: "Tarantool-patches" Part of #4145 --- src/box/sql/func.c | 64 +++++++++++++++++++--------------------------- 1 file changed, 26 insertions(+), 38 deletions(-) diff --git a/src/box/sql/func.c b/src/box/sql/func.c index 94ec811ef..384c68be8 100644 --- a/src/box/sql/func.c +++ b/src/box/sql/func.c @@ -154,6 +154,29 @@ fin_avg(struct sql_context *ctx) ctx->is_aborted = true; } +/** Implementation of the COUNT() function. */ +static void +step_count(struct sql_context *ctx, int argc, struct Mem **argv) +{ + assert(argc == 0 || argc == 1); + if (mem_is_null(ctx->pMem)) + mem_set_uint(ctx->pMem, 0); + if (argc == 1 && mem_is_null(argv[0])) + return; + assert(mem_is_uint(ctx->pMem)); + ++ctx->pMem->u.u; +} + +/** Finalizer for the COUNT() function. */ +static void +fin_count(struct sql_context *ctx) +{ + assert(mem_is_null(ctx->pMem) || mem_is_uint(ctx->pMem)); + if (mem_is_null(ctx->pMem)) + return mem_set_uint(ctx->pOut, 0); + mem_copy_as_ephemeral(ctx->pOut, ctx->pMem); +} + static const unsigned char * mem_as_ustr(struct Mem *mem) { @@ -1716,41 +1739,6 @@ soundexFunc(sql_context * context, int argc, sql_value ** argv) } } -/* - * The following structure keeps track of state information for the - * count() aggregate function. - */ -typedef struct CountCtx CountCtx; -struct CountCtx { - i64 n; -}; - -/* - * Routines to implement the count() aggregate function. - */ -static void -countStep(sql_context * context, int argc, sql_value ** argv) -{ - CountCtx *p; - if (argc != 0 && argc != 1) { - diag_set(ClientError, ER_FUNC_WRONG_ARG_COUNT, - "COUNT", "0 or 1", argc); - context->is_aborted = true; - return; - } - p = sql_aggregate_context(context, sizeof(*p)); - if ((argc == 0 || !mem_is_null(argv[0])) && p != NULL) - p->n++; -} - -static void -countFinalize(sql_context * context) -{ - CountCtx *p; - p = sql_aggregate_context(context, 0); - sql_result_uint(context, p ? p->n : 0); -} - /* * Routines to implement min() and max() aggregate functions. */ @@ -2019,9 +2007,9 @@ static struct sql_func_definition definitions[] = { NULL}, {"COALESCE", -1, {FIELD_TYPE_ANY}, FIELD_TYPE_SCALAR, sql_builtin_stub, NULL}, - {"COUNT", 0, {}, FIELD_TYPE_INTEGER, countStep, countFinalize}, - {"COUNT", 1, {FIELD_TYPE_ANY}, FIELD_TYPE_INTEGER, countStep, - countFinalize}, + {"COUNT", 0, {}, FIELD_TYPE_INTEGER, step_count, fin_count}, + {"COUNT", 1, {FIELD_TYPE_ANY}, FIELD_TYPE_INTEGER, step_count, + fin_count}, {"GREATEST", -1, {FIELD_TYPE_INTEGER}, FIELD_TYPE_INTEGER, minmaxFunc, NULL}, -- 2.25.1