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PowerShellGetting Started

Create an array of text values

PowerShell: Create an array of text values using PowerShell 7.

PowerShell✓ Tested
Linux CommandsFiles & permissions

Create an empty file

Linux Commands: Use touch to create a file when absent; an existing file keeps its contents but gets updated timestamps.

Linux Commands✓ Tested
Linux CommandsGetting Started

Create an empty practice file

Linux Commands: Create an empty practice file using GNU/Linux commands in an empty practice directory.

Linux Commands✓ Tested
CDynamic memory & ownership

Create an independent copy of a byte buffer

C: Allocate the exact byte length and copy only after checking the result.

C✓ Tested
SQLSchema design & transactions

Create an index for an equality filter

SQL: A nonunique index can support lookups on a frequently filtered column.

SQL✓ Tested
SQL ServerSchema design & transactions

Create an index for an equality filter

SQL Server: A nonunique index can support lookups on a frequently filtered column.

SQL Server✓ Tested
PostgresSchema design & transactions

Create an index for an equality filter

Postgres: A nonunique index can support lookups on a frequently filtered column.

Postgres✓ Tested
SQLiteSchema design & transactions

Create an index for an equality filter

SQLite: A nonunique index can support lookups on a frequently filtered column.

SQLite✓ Tested
SQLSchema design & transactions

Create an index matching filter and ordering columns

SQL: Place the equality-filter column before the ordering column in this composite index.

SQL✓ Tested
SQL ServerSchema design & transactions

Create an index matching filter and ordering columns

SQL Server: Place the equality-filter column before the ordering column in this composite index.

SQL Server✓ Tested
PostgresSchema design & transactions

Create an index matching filter and ordering columns

Postgres: Place the equality-filter column before the ordering column in this composite index.

Postgres✓ Tested
SQLiteSchema design & transactions

Create an index matching filter and ordering columns

SQLite: Place the equality-filter column before the ordering column in this composite index.

SQLite✓ Tested