Merge pull request #3850 from masatake/sql--create-view-if-not-exists

 SQL: extact views in "create view if not exists VIEW ..."

Units/parser-sql.r/sql-create-view-if-not-exists.d/args.ctags

@@ -0,0 +1 @@
+--sort=no

Units/parser-sql.r/sql-create-view-if-not-exists.d/expected.tags

@@ -0,0 +1 @@
+messages_data	input.sql	/^CREATE VIEW IF NOT EXISTS messages_data AS$/;"	V

Units/parser-sql.r/sql-create-view-if-not-exists.d/input.sql

@@ -0,0 +1,21 @@
+-- Taken from leapp-0.15.1/res/schema/audit-layout.sql
+
+CREATE VIEW IF NOT EXISTS messages_data AS
+  SELECT
+    message.id        AS id,
+    message.context   AS context,
+    message.stamp     AS stamp,
+    message.topic     AS topic,
+    message.type      AS type,
+    data_source.actor AS actor,
+    data_source.phase AS phase,
+    msg_data.hash     AS message_hash,
+    msg_data.data     AS message_data,
+    host.hostname     AS hostname
+  FROM
+    message
+  JOIN
+    data_source              ON data_source.id            = message.data_source_id,
+    message_data AS msg_data ON message.message_data_hash = msg_data.hash,
+    host                     ON host.id                   = data_source.host_id
+;

parsers/sql.c

@@ -2752,10 +2752,15 @@ static void parseView (tokenInfo *const token)
 	 *     create view VIEW;
 	 *     create view VIEW as ...;
 	 *     create view VIEW (...) as ...;
+	 *     create view if not exists VIEW as ...;
+	 *       -- [SQLITE] https://www.sqlite.org/lang_createview.html
 	 */
 
 	readIdentifier (name);
 	readToken (token);
+
+	parseIdAfterIfNotExists(name, token, false);
+
 	if (isType (token, TOKEN_PERIOD))
 	{
 		readIdentifier (name);