From: Vladislav Shpilevoy via Tarantool-patches <tarantool-patches@dev.tarantool.org> To: imeevma@tarantool.org Cc: tarantool-patches@dev.tarantool.org Subject: Re: [Tarantool-patches] [PATCH v1 6/8] sql: rework POSITION() function Date: Fri, 8 Oct 2021 23:58:32 +0200 [thread overview] Message-ID: <b039e0e8-cc69-66f1-f2d6-5d2ac7d08f24@tarantool.org> (raw) In-Reply-To: <bf489d2d0a8ff34c71eabac1f3a65ab789e04166.1633105483.git.imeevma@gmail.com> Thanks for the patch! See 3 comments below. > diff --git a/src/box/sql/func.c b/src/box/sql/func.c > index 1d1a8b0cd..415a92738 100644 > --- a/src/box/sql/func.c > +++ b/src/box/sql/func.c > @@ -530,6 +530,68 @@ func_trim_str(struct sql_context *ctx, int argc, struct Mem *argv) > ctx->is_aborted = true; > } > > +/** Implementation of the POSITION() function. */ > +static void > +func_position_octets(struct sql_context *ctx, int argc, struct Mem *argv) > +{ > + assert(argc == 2); > + (void)argc; > + if (mem_is_null(&argv[0]) || mem_is_null(&argv[1])) 1. There is mem_is_any_null(). The same in the next function. > + return; > + assert(mem_is_bytes(&argv[0]) && mem_is_bytes(&argv[1])); > + > + const char *key = argv[0].z; > + const char *str = argv[1].z; > + int key_size = argv[0].n; > + int str_size = argv[1].n; > + if (key_size <= 0) > + return mem_set_uint(ctx->pOut, 1); > + /* Matching time O(n * m). */ > + for (int i = 0; i <= str_size - key_size; ++i) { > + if (memcmp(&str[i], key, key_size) == 0) > + return mem_set_uint(ctx->pOut, i + 1); > + } 2. There is memmem(). > + return mem_set_uint(ctx->pOut, 0); > +} > diff --git a/test/sql-tap/position.test.lua b/test/sql-tap/position.test.lua > index 6a96ed9bc..5f62c7f54 100755 > --- a/test/sql-tap/position.test.lua > +++ b/test/sql-tap/position.test.lua > @@ -858,4 +858,14 @@ test:do_catchsql_test( > } > ) > > +-- gh-4145: Make sure that POSITION() can wirk with VARBINARY. 3. wirk -> work. > +test:do_execsql_test( > + "position-2", > + [[ > + SELECT POSITION(x'313233', x'30313231323334353132333435'); > + ]], { > + 4 > + } > +) > + > test:finish_test() >
next prev parent reply other threads:[~2021-10-08 21:58 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-01 16:29 [Tarantool-patches] [PATCH v1 0/8] Rework standard function Mergen Imeev via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 1/8] sql: refactor ABS() funcion Mergen Imeev via Tarantool-patches 2021-10-08 21:55 ` Vladislav Shpilevoy via Tarantool-patches 2021-10-20 16:52 ` Mergen Imeev via Tarantool-patches 2021-10-28 22:11 ` Vladislav Shpilevoy via Tarantool-patches 2021-11-01 10:11 ` Mergen Imeev via Tarantool-patches 2021-11-01 13:37 ` Vladislav Shpilevoy via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 2/8] sql: refactor CHAR_LENGTH() function Mergen Imeev via Tarantool-patches 2021-10-08 21:56 ` Vladislav Shpilevoy via Tarantool-patches 2021-10-20 16:58 ` Mergen Imeev via Tarantool-patches 2021-10-28 22:11 ` Vladislav Shpilevoy via Tarantool-patches 2021-11-01 10:20 ` Mergen Imeev via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 3/8] sql: refactor UPPER() and LOWER() functions Mergen Imeev via Tarantool-patches 2021-10-20 17:02 ` Mergen Imeev via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 4/8] sql: refactor NULLIF() function Mergen Imeev via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 5/8] sql: rework TRIM() function Mergen Imeev via Tarantool-patches 2021-10-20 17:05 ` Mergen Imeev via Tarantool-patches 2021-10-28 22:12 ` Vladislav Shpilevoy via Tarantool-patches 2021-11-01 10:35 ` Mergen Imeev via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 6/8] sql: rework POSITION() function Mergen Imeev via Tarantool-patches 2021-10-08 21:58 ` Vladislav Shpilevoy via Tarantool-patches [this message] 2021-10-20 17:08 ` Mergen Imeev via Tarantool-patches 2021-11-01 10:41 ` Mergen Imeev via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 7/8] sql: rework SUBSTR() function Mergen Imeev via Tarantool-patches 2021-10-08 22:02 ` Vladislav Shpilevoy via Tarantool-patches 2021-10-20 17:15 ` Mergen Imeev via Tarantool-patches 2021-10-28 22:13 ` Vladislav Shpilevoy via Tarantool-patches 2021-11-01 10:45 ` Mergen Imeev via Tarantool-patches 2021-10-01 16:29 ` [Tarantool-patches] [PATCH v1 8/8] sql: refactor LIKE() function Mergen Imeev via Tarantool-patches 2021-10-08 22:02 ` Vladislav Shpilevoy via Tarantool-patches 2021-10-20 17:19 ` Mergen Imeev via Tarantool-patches 2021-11-01 10:48 ` Mergen Imeev via Tarantool-patches 2021-11-01 10:53 ` Mergen Imeev via Tarantool-patches 2021-10-04 13:32 ` [Tarantool-patches] [PATCH v1 0/8] Rework standard function Mergen Imeev via Tarantool-patches 2021-11-01 13:38 ` Vladislav Shpilevoy via Tarantool-patches 2021-11-11 10:45 Mergen Imeev via Tarantool-patches 2021-11-11 10:45 ` [Tarantool-patches] [PATCH v1 6/8] sql: rework POSITION() function Mergen Imeev via Tarantool-patches
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