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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 v1 4/8] sql: refactor NULLIF() function
Date: Fri,  1 Oct 2021 19:29:30 +0300
Message-ID: <f6b79ff8372089160ae8dfed3e5e4d3e81621747.1633105483.git.imeevma@gmail.com> (raw)
In-Reply-To: <cover.1633105483.git.imeevma@gmail.com>

Part of #4145
---
 src/box/sql/func.c | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/src/box/sql/func.c b/src/box/sql/func.c
index 565ebcabe..17d5fab8f 100644
--- a/src/box/sql/func.c
+++ b/src/box/sql/func.c
@@ -348,6 +348,18 @@ func_lower_upper(struct sql_context *ctx, int argc, struct Mem *argv)
 	mem_set_str_allocated(ctx->pOut, res, new_len);
 }
 
+/** Implementation of the NULLIF() function. */
+static void
+func_nullif(struct sql_context *ctx, int argc, struct Mem *argv)
+{
+	assert(argc == 2);
+	(void)argc;
+	if (mem_cmp_scalar(&argv[0], &argv[1], ctx->coll) == 0)
+		return;
+	if (mem_copy(ctx->pOut, &argv[0]) != 0)
+		ctx->is_aborted = true;
+}
+
 static const unsigned char *
 mem_as_ustr(struct Mem *mem)
 {
@@ -1210,20 +1222,6 @@ likeFunc(sql_context *context, int argc, struct Mem *argv)
 	sql_result_bool(context, res == MATCH);
 }
 
-/*
- * Implementation of the NULLIF(x,y) function.  The result is the first
- * argument if the arguments are different.  The result is NULL if the
- * arguments are equal to each other.
- */
-static void
-nullifFunc(struct sql_context *context, int argc, struct Mem *argv)
-{
-	(void)argc;
-	struct coll *pColl = context->coll;
-	if (mem_cmp_scalar(&argv[0], &argv[1], pColl) != 0)
-		sql_result_value(context, &argv[0]);
-}
-
 /**
  * Implementation of the version() function.  The result is the
  * version of the Tarantool that is running.
@@ -2021,7 +2019,7 @@ static struct sql_func_definition definitions[] = {
 	{"MIN", 1, {FIELD_TYPE_SCALAR}, FIELD_TYPE_SCALAR, step_minmax, NULL},
 
 	{"NULLIF", 2, {FIELD_TYPE_ANY, FIELD_TYPE_ANY}, FIELD_TYPE_SCALAR,
-	 nullifFunc, NULL},
+	 func_nullif, NULL},
 	{"POSITION", 2, {FIELD_TYPE_STRING, FIELD_TYPE_STRING},
 	 FIELD_TYPE_INTEGER, position_func, NULL},
 	{"PRINTF", -1, {FIELD_TYPE_ANY}, FIELD_TYPE_STRING, printfFunc, 
-- 
2.25.1


  parent reply	other threads:[~2021-10-01 16:31 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 ` Mergen Imeev via Tarantool-patches [this message]
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
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 4/8] sql: refactor NULLIF() function Mergen Imeev via Tarantool-patches

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