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leandromonaco committed Sep 9, 2024
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2 changes: 1 addition & 1 deletion .obsidian/bookmarks.json
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0 articles/Tools/SQL Lite.md → articles/Database/SQL Lite.md
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153 changes: 2 additions & 151 deletions articles/Tools/Sql Server.md → articles/Database/Sql Server.md
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Expand Up @@ -62,161 +62,12 @@ winget upgrade -e --id Microsoft.Sqlcmd
Enable transient error resiliency by adding `EnableRetryOnFailure` to the `UseSqlServer` call on [[ASP.NET]]

## Useful Commands

`sp_helptext`
## Useful Queries
### Backup
```sql

--Windows
BACKUP DATABASE [DbName] TO
DISK = N'C:\Dev\Database\DbName.bak'
WITH COMPRESSION, STATS = 10
GO

--Linux
BACKUP DATABASE [DbName] TO
DISK = N'/var/opt/mssql/data/DbName.bak'
WITH COMPRESSION, STATS = 10
GO
```
### Paging
```sql
--https://learn.microsoft.com/en-us/sql/t-sql/queries/select-order-by-clause-transact-sql
SELECT *
FROM Employee
ORDER BY EmployeeId
OFFSET 20 ROWS
FETCH NEXT 5 ROWS ONLY
```
### Restore
```sql
USE master;
GO

ALTER DATABASE [DbName]
SET SINGLE_USER
WITH ROLLBACK IMMEDIATE;
GO

RESTORE DATABASE [DbName]
FROM DISK = N'C:\Dev\Database\DbName.bak'
WITH RECOVERY
GO

RESTORE DATABASE [DbName]
FROM DISK = N'C:\Dev\Database\DbName.bak'
WITH MOVE 'DbName' TO 'C:\Dev\Database\DbName.mdf',
MOVE 'DbName_log' TO 'C:\Dev\Database\DbName_log.ldf',
RECOVERY, REPLACE
GO

RESTORE DATABASE Local
FROM DISK = N'/var/opt/mssql/data/Local.bak'
WITH MOVE 'Database' TO '/var/opt/mssql/data/Local.mdf',
MOVE 'Database_Log' TO '/var/opt/mssql/log/Local.ldf',
RECOVERY, REPLACE
GO
```
### Get all linked tables by FK
```sql
SELECT
OBJECT_NAME(fkeys.constraint_object_id) foreign_key_name,
OBJECT_NAME(fkeys.parent_object_id) referencing_table_name,
COL_NAME(fkeys.parent_object_id, fkeys.parent_column_id) referencing_column_name,
OBJECT_SCHEMA_NAME(fkeys.parent_object_id) referencing_schema_name,
OBJECT_NAME (fkeys.referenced_object_id) referenced_table_name,
COL_NAME(
fkeys.referenced_object_id,
fkeys.referenced_column_id
) referenced_column_name,
OBJECT_SCHEMA_NAME(fkeys.referenced_object_id) referenced_schema_name
FROM
sys.foreign_key_columns AS fkeys
ORDER BY referenced_table_name
```
### View the compatibility level of a database
```sql
USE AdventureWorks2019;
GO
SELECT compatibility_level
FROM sys.databases WHERE name = 'AdventureWorks2019';
GO
```
### List all tables that are linked by foreign keys
```sql
SELECT
FK_Table = FK.TABLE_NAME,
FK_Column = CU.COLUMN_NAME,
PK_Table = PK.TABLE_NAME,
PK_Column = PT.COLUMN_NAME,
Constraint_Name = C.CONSTRAINT_NAME
FROM
INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C
INNER JOIN
INFORMATION_SCHEMA.TABLE_CONSTRAINTS FK
ON C.CONSTRAINT_NAME = FK.CONSTRAINT_NAME
INNER JOIN
INFORMATION_SCHEMA.TABLE_CONSTRAINTS PK
ON C.UNIQUE_CONSTRAINT_NAME = PK.CONSTRAINT_NAME
INNER JOIN
INFORMATION_SCHEMA.KEY_COLUMN_USAGE CU
ON C.CONSTRAINT_NAME = CU.CONSTRAINT_NAME
INNER JOIN
(
SELECT
i1.TABLE_NAME,
i2.COLUMN_NAME
FROM
INFORMATION_SCHEMA.TABLE_CONSTRAINTS i1
INNER JOIN
INFORMATION_SCHEMA.KEY_COLUMN_USAGE i2
ON i1.CONSTRAINT_NAME = i2.CONSTRAINT_NAME
WHERE
i1.CONSTRAINT_TYPE = 'PRIMARY KEY'
) PT
ON PT.TABLE_NAME = PK.TABLE_NAME
```

### List tables with no records
```sql
SELECT
t.NAME AS TableName,
p.rows AS RowCounts
FROM
sys.tables t
INNER JOIN sys.partitions p ON t.object_id = p.OBJECT_ID
WHERE
t.NAME NOT LIKE 'dt%'
AND t.is_ms_shipped = 0
AND p.rows = 0
GROUP BY
t.Name,
p.Rows
ORDER BY
t.Name
```
[[Useful SQL Server Queries]]

### List all DB objects in a Database
```sql
SELECT name,*
FROM [DBName].sys.all_objects
WHERE upper(name) LIKE upper('%someName%')
ORDER BY type_desc
```

## Data Size

```sql
SELECT CAST(SUM(TotalSize) AS varchar(255)) + ' bytes'
FROM(
SELECT (DATALENGTH(Column) +
DATALENGTH(Column) +
DATALENGTH(Column) +
DATALENGTH(Column) +
DATALENGTH(Column)) AS TotalSize
FROM TableName
) t
```
## Encryption by Certificate
- https://docs.microsoft.com/en-us/sql/t-sql/functions/encryptbycert-transact-sql
- https://docs.microsoft.com/en-us/sql/t-sql/functions/decryptbycert-transact-sql
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