SQL Commands: Difference between revisions
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== | == CREATE USER == | ||
{| class="wikitable" | {| class="wikitable" | ||
! || Postgres || MariaDB | ! || Postgres || MariaDB | ||
|- | |- | ||
| | | create user | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
CREATE USER username WITH PASSWORD 'your_password'; | |||
</syntaxhighlight> | </syntaxhighlight> | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
|- | |- | ||
| | | change password | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
|} | |||
== GRANT == | |||
{| class="wikitable" | |||
! || Postgres || MariaDB | |||
|- | |- | ||
| | | on database to user | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
GRANT ALL PRIVILEGES | |||
ON DATABASE operation_center | |||
TO db_user; | |||
</syntaxhighlight> | </syntaxhighlight> | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
|- | |- | ||
| | | on table to user | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
GRANT ALL PRIVILEGES | |||
ON ALL TABLES | |||
IN SCHEMA public | |||
TO db_user; | |||
</syntaxhighlight> | </syntaxhighlight> | ||
| <syntaxhighlight lang="sql"> | | <syntaxhighlight lang="sql"> | ||
Latest revision as of 03:03, 22 September 2025
Common Operations
Functions
| Postgres | MariaDB | SQLite | |
|---|---|---|---|
| Today |
Visiting
| Postgres | MariaDB | SQLite | |
|---|---|---|---|
| List tables | show tables; |
.tables |
CREATE USER
| Postgres | MariaDB | |
|---|---|---|
| create user | CREATE USER username WITH PASSWORD 'your_password';
|
|
| change password |
GRANT
| Postgres | MariaDB | |
|---|---|---|
| on database to user | GRANT ALL PRIVILEGES
ON DATABASE operation_center
TO db_user;
|
|
| on table to user | GRANT ALL PRIVILEGES
ON ALL TABLES
IN SCHEMA public
TO db_user;
|
SQLite 3
| TODO | Command |
|---|---|
| yyyymmdd to yyyy-mm-dd |
SELECT printf('%s-%s-%s',
SUBSTR(trading_date,1,4),
SUBSTR(trading_date,5,2),
SUBSTR(trading_date,7,2)
) FROM short_sell WHERE trading_date='20190605';
|