create database upper_case_table_name;

Affected Rows: 1

use upper_case_table_name;

Affected Rows: 0

create table "system_Metric"(ts timestamp time index);

Affected Rows: 0

insert into "system_Metric" values (0), (1);

Affected Rows: 2

select * from system_Metric;

Error: 4001(TableNotFound), Failed to plan SQL: Table not found: greptime.upper_case_table_name.system_metric

select * from "system_Metric";

+-------------------------+
| ts                      |
+-------------------------+
| 1970-01-01T00:00:00     |
| 1970-01-01T00:00:00.001 |
+-------------------------+

drop table "system_Metric";

Affected Rows: 0

create table "AbCdEfG"("CoLA" string, "cOlB" string, "tS" timestamp time index, primary key ("CoLA"));

Affected Rows: 0

desc table "AbCdEfG";

+--------+----------------------+-----+------+---------+---------------+
| Column | Type                 | Key | Null | Default | Semantic Type |
+--------+----------------------+-----+------+---------+---------------+
| CoLA   | String               | PRI | YES  |         | TAG           |
| cOlB   | String               |     | YES  |         | FIELD         |
| tS     | TimestampMillisecond | PRI | NO   |         | TIMESTAMP     |
+--------+----------------------+-----+------+---------+---------------+

-- unquoted table name and column name.
create table AbCdEfGe(CoLA string, cOlB string, tS timestamp time index, primary key (cOlA));

Affected Rows: 0

desc table aBcDeFgE;

+--------+----------------------+-----+------+---------+---------------+
| Column | Type                 | Key | Null | Default | Semantic Type |
+--------+----------------------+-----+------+---------+---------------+
| cola   | String               | PRI | YES  |         | TAG           |
| colb   | String               |     | YES  |         | FIELD         |
| ts     | TimestampMillisecond | PRI | NO   |         | TIMESTAMP     |
+--------+----------------------+-----+------+---------+---------------+

drop table "AbCdEfG";

Affected Rows: 0

drop table aBcDeFgE;

Affected Rows: 0

-- unquoted column name in partition
create table AbCdEfGe(
    CoLA string PRIMARY KEY,
    tS timestamp time index
) PARTITION ON COLUMNS (cOlA) ();

Affected Rows: 0

drop table abcdefge;

Affected Rows: 0

-- unquoted column name in TIME INDEX
create table AbCdEfGe(CoLA string, tS timestamp, TIME INDEX (Ts));

Affected Rows: 0

desc table abcdefge;

+--------+----------------------+-----+------+---------+---------------+
| Column | Type                 | Key | Null | Default | Semantic Type |
+--------+----------------------+-----+------+---------+---------------+
| cola   | String               |     | YES  |         | FIELD         |
| ts     | TimestampMillisecond | PRI | NO   |         | TIMESTAMP     |
+--------+----------------------+-----+------+---------+---------------+

drop table abcdefge;

Affected Rows: 0

drop database upper_case_table_name;

Error: 1004(InvalidArguments), Schema `upper_case_table_name` is in use

use public;

Affected Rows: 0

drop database upper_case_table_name;

Affected Rows: 0