Change lowercase SQL keywords to uppercase to improve consistency

Author: DamianMaslanka5

docs/best-practices/using_data_skipping_indices.md

@@ -140,7 +140,7 @@ LIMIT 1
 A simple analysis shows that `ViewCount` is correlated with the `CreationDate` (a primary key) as one might expect - the longer a post exists, the more time it has to be viewed.
 
 ```sql
-SELECT toDate(CreationDate) as day, avg(ViewCount) as view_count FROM stackoverflow.posts WHERE day > '2009-01-01'  GROUP BY day
+SELECT toDate(CreationDate) AS day, avg(ViewCount) AS view_count FROM stackoverflow.posts WHERE day > '2009-01-01'  GROUP BY day
 ```
 
 This therefore makes a logical choice for a data skipping index. Given the numeric type, a min_max index makes sense. We add an index using the following `ALTER TABLE` commands - first adding it, then "materializing it".

docs/cloud/get-started/query-endpoints.md

@@ -29,16 +29,16 @@ If you have a saved query, you can skip this step.
 Open a new query tab. For demonstration purposes, we'll use the [youtube dataset](/getting-started/example-datasets/youtube-dislikes), which contains approximately 4.5 billion records. As an example query, we'll return the top 10 uploaders by average views per video in a user-inputted `year` parameter:
 
 ```sql
-with sum(view_count) as view_sum,
-    round(view_sum / num_uploads, 2) as per_upload
-select
+WITH sum(view_count) AS view_sum,
+    round(view_sum / num_uploads, 2) AS per_upload
+SELECT
     uploader,
-    count() as num_uploads,
-    formatReadableQuantity(view_sum) as total_views,
-    formatReadableQuantity(per_upload) as views_per_video
-from
+    count() AS num_uploads,
+    formatReadableQuantity(view_sum) AS total_views,
+    formatReadableQuantity(per_upload) AS views_per_video
+FROM
     youtube
-where
+WHERE
     toYear(upload_date) = {year: UInt16}
 group by uploader
 order by per_upload desc
@@ -149,7 +149,7 @@ To upgrade the endpoint version from `v1` to `v2`, include the `x-clickhouse-end
 **Query API Endpoint SQL:**
 
 ```sql
-SELECT database, name as num_tables FROM system.tables limit 3;
+SELECT database, name AS num_tables FROM system.tables LIMIT 3;
 ```
 
 #### Version 1 {#version-1}
@@ -365,7 +365,7 @@ OK
 **Query API Endpoint SQL:**
 
 ```sql
-SELECT * from system.tables;
+SELECT * FROM system.tables;
 ```
 
 **cURL:**
@@ -401,7 +401,7 @@ fetch(
 **Query API Endpoint SQL:**
 
 ```sql
-SELECT name, database from system.tables;
+SELECT name, database FROM system.tables;
 ```
 
 **Typescript:**

docs/cloud/get-started/sql-console.md

@@ -251,17 +251,17 @@ Query result sets can be easily exported to CSV format directly from the SQL con
 Some data can be more easily interpreted in chart form. You can quickly create visualizations from query result data directly from the SQL console in just a few clicks. As an example, we'll use a query that calculates weekly statistics for NYC taxi trips:
 
 ```sql
-select
-   toStartOfWeek(pickup_datetime) as week,
-   sum(total_amount) as fare_total,
-   sum(trip_distance) as distance_total,
-   count(*) as trip_total
-from
+SELECT
+   toStartOfWeek(pickup_datetime) AS week,
+   sum(total_amount) AS fare_total,
+   sum(trip_distance) AS distance_total,
+   count(*) AS trip_total
+FROM
    nyc_taxi
-group by
+GROUP BY
    1
-order by
-   1 asc
+ORDER BY
+   1 ASC
 ```
 
 <Image img={tabular_query_results} size="md" alt='Tabular query results' />

docs/cloud/reference/warehouses.md

@@ -135,8 +135,8 @@ Once compute-compute is enabled for a service (at least one secondary service wa
 6. **CREATE/RENAME/DROP DATABASE queries could be blocked by idled/stopped services by default.** These queries can hang. To bypass this, you  can run database management queries with `settings distributed_ddl_task_timeout=0` at the session or per query level. For example:
 
 ```sql
-create database db_test_ddl_single_query_setting
-settings distributed_ddl_task_timeout=0
+CREATE DATABASE db_test_ddl_single_query_setting
+SETTINGS distributed_ddl_task_timeout=0
 ```
 
 6. **In very rare cases, secondary services that are idled or stopped for a long time (days) without waking/starting up can cause performance degradation to other services in the same warehouse.** This issue will be resolved soon and is connected to mutations running in the background. If you think you are experiencing this issue, please contact ClickHouse [Support](https://clickhouse.com/support/program).

docs/data-modeling/backfilling.md

@@ -371,7 +371,7 @@ While we can add the target table, prior to adding the materialized view we modi
 ```sql
 CREATE MATERIALIZED VIEW pypi_downloads_per_day_mv TO pypi_downloads_per_day
 AS SELECT
- toStartOfHour(timestamp) as hour,
+ toStartOfHour(timestamp) AS hour,
  project, count() AS count
 FROM pypi WHERE timestamp >= '2024-12-17 09:00:00'
 GROUP BY hour, project

docs/getting-started/example-datasets/covid19.md

@@ -152,7 +152,7 @@ WITH latest_deaths_data AS
             date,
             new_deceased,
             new_confirmed,
-            ROW_NUMBER() OVER (PARTITION BY location_key ORDER BY date DESC) as rn
+            ROW_NUMBER() OVER (PARTITION BY location_key ORDER BY date DESC) AS rn
      FROM covid19)
 SELECT location_key,
        date,

docs/getting-started/example-datasets/environmental-sensors.md

@@ -168,7 +168,7 @@ WITH
 SELECT day, count() FROM sensors
 WHERE temperature >= 40 AND temperature <= 50 AND humidity >= 90
 GROUP BY day
-ORDER BY day asc;
+ORDER BY day ASC;
 ```
 
 Here's a visualization of the result:

docs/getting-started/example-datasets/github.md

@@ -1245,8 +1245,8 @@ The `sign = -1` indicates a code deletion. We exclude punctuation and the insert
 
 ```sql
 SELECT
-    prev_author || '(a)' as add_author,
-    author  || '(d)' as delete_author,
+    prev_author || '(a)' AS add_author,
+    author  || '(d)' AS delete_author,
     count() AS c
 FROM git.line_changes
 WHERE (sign = -1) AND (file_extension IN ('h', 'cpp')) AND (line_type NOT IN ('Punct', 'Empty')) AND (author != prev_author) AND (prev_author != '')

docs/getting-started/example-datasets/ontime.md

@@ -209,7 +209,7 @@ ORDER BY count(*) DESC;
 Q5. The percentage of delays by carrier for 2007
 
 ```sql
-SELECT Carrier, c, c2, c*100/c2 as c3
+SELECT Carrier, c, c2, c*100/c2 AS c3
 FROM
 (
     SELECT
@@ -245,7 +245,7 @@ ORDER BY c3 DESC
 Q6. The previous request for a broader range of years, 2000-2008
 
 ```sql
-SELECT Carrier, c, c2, c*100/c2 as c3
+SELECT Carrier, c, c2, c*100/c2 AS c3
 FROM
 (
     SELECT
@@ -284,19 +284,19 @@ Q7. Percentage of flights delayed for more than 10 minutes, by year
 SELECT Year, c1/c2
 FROM
 (
-    select
+    SELECT
         Year,
-        count(*)*100 as c1
-    from ontime
+        count(*)*100 AS c1
+    FROM ontime
     WHERE DepDelay>10
     GROUP BY Year
 ) q
 JOIN
 (
-    select
+    SELECT
         Year,
-        count(*) as c2
-    from ontime
+        count(*) AS c2
+    FROM ontime
     GROUP BY Year
 ) qq USING (Year)
 ORDER BY Year;
@@ -316,7 +316,7 @@ Q8. The most popular destinations by the number of directly connected cities for
 ```sql
 SELECT DestCityName, uniqExact(OriginCityName) AS u
 FROM ontime
-WHERE Year >= 2000 and Year <= 2010
+WHERE Year >= 2000 AND Year <= 2010
 GROUP BY DestCityName
 ORDER BY u DESC LIMIT 10;
 ```
@@ -341,9 +341,9 @@ WHERE
    DayOfWeek NOT IN (6,7) AND OriginState NOT IN ('AK', 'HI', 'PR', 'VI')
    AND DestState NOT IN ('AK', 'HI', 'PR', 'VI')
    AND FlightDate < '2010-01-01'
-GROUP by Carrier
-HAVING cnt>100000 and max(Year)>1990
-ORDER by rate DESC
+GROUP BY Carrier
+HAVING cnt>100000 AND max(Year)>1990
+ORDER BY rate DESC
 LIMIT 1000;
 ```
 

docs/getting-started/example-datasets/tpch.md

@@ -698,7 +698,7 @@ FROM
     lineitem
 WHERE
     o_orderkey = l_orderkey
-    AND l_shipmode in ('MAIL', 'SHIP')
+    AND l_shipmode IN ('MAIL', 'SHIP')
     AND l_commitdate < l_receiptdate
     AND l_shipdate < l_commitdate
     AND l_receiptdate >= DATE '1994-01-01'
@@ -718,7 +718,7 @@ SELECT
 FROM (
     SELECT
         c_custkey,
-        count(o_orderkey) as c_count
+        count(o_orderkey) AS c_count
     FROM
         customer LEFT OUTER JOIN orders ON
             c_custkey = o_custkey
@@ -796,16 +796,16 @@ SELECT
     p_brand,
     p_type,
     p_size,
-    count(distinct ps_suppkey) AS supplier_cnt
+    count(DISTINCT ps_suppkey) AS supplier_cnt
 FROM
     partsupp,
     part
 WHERE
     p_partkey = ps_partkey
     AND p_brand <> 'Brand#45'
     AND p_type NOT LIKE 'MEDIUM POLISHED%'
-    AND p_size in (49, 14, 23,  45, 19, 3, 36, 9)
-    AND ps_suppkey NOT in (
+    AND p_size IN (49, 14, 23,  45, 19, 3, 36, 9)
+    AND ps_suppkey NOT IN (
         SELECT
             s_suppkey
         FROM
@@ -894,7 +894,7 @@ FROM
     orders,
     lineitem
 WHERE
-    o_orderkey in (
+    o_orderkey IN (
         SELECT
             l_orderkey
         FROM
@@ -929,30 +929,30 @@ WHERE
     (
         p_partkey = l_partkey
         AND p_brand = 'Brand#12'
-        AND p_container in ('SM CASE', 'SM BOX', 'SM PACK', 'SM PKG')
+        AND p_container IN ('SM CASE', 'SM BOX', 'SM PACK', 'SM PKG')
         AND l_quantity >= 1 AND l_quantity <= 1 + 10
         AND p_size BETWEEN 1 AND 5
-        AND l_shipmode in ('AIR', 'AIR REG')
+        AND l_shipmode IN ('AIR', 'AIR REG')
         AND l_shipinstruct = 'DELIVER IN PERSON'
     )
     OR
     (
         p_partkey = l_partkey
         AND p_brand = 'Brand#23'
-        AND p_container in ('MED BAG', 'MED BOX', 'MED PKG', 'MED PACK')
+        AND p_container IN ('MED BAG', 'MED BOX', 'MED PKG', 'MED PACK')
         AND l_quantity >= 10 AND l_quantity <= 10 + 10
         AND p_size BETWEEN 1 AND 10
-        AND l_shipmode in ('AIR', 'AIR REG')
+        AND l_shipmode IN ('AIR', 'AIR REG')
         AND l_shipinstruct = 'DELIVER IN PERSON'
     )
     OR
     (
         p_partkey = l_partkey
         AND p_brand = 'Brand#34'
-        AND p_container in ('LG CASE', 'LG BOX', 'LG PACK', 'LG PKG')
+        AND p_container IN ('LG CASE', 'LG BOX', 'LG PACK', 'LG PKG')
         AND l_quantity >= 20 AND l_quantity <= 20 + 10
         AND p_size BETWEEN 1 AND 15
-        AND l_shipmode in ('AIR', 'AIR REG')
+        AND l_shipmode IN ('AIR', 'AIR REG')
         AND l_shipinstruct = 'DELIVER IN PERSON'
     );
 ```