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Results for “string_agg”

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C++Text validation & parsing

Extract a substring with an explicit count

C++: The second substr argument is a length rather than an ending index.

C++✓ Tested
C#Text validation & encoding

Extract a substring with range syntax

C#: C# range ends are exclusive; indices operate on UTF-16 code units.

C#✓ Tested
SQLiteQueries & text

Extract part of a string

Use one-based positions with substr.

substr✓ Tested
SQLExpressions & aggregates

Filter aggregate groups

Keep only categories with multiple products.

HAVING✓ Tested
SQLGetting Started

Filter groups after aggregation

SQL: Use HAVING to test a group’s calculated total.

SQL✓ Tested
SQL ServerGetting Started

Filter groups after aggregation

SQL Server: Use HAVING to test a group’s calculated total.

SQL Server✓ Tested
PostgresGetting Started

Filter groups after aggregation

Postgres: Use HAVING to test a group’s calculated total.

Postgres✓ Tested
SQLiteGetting Started

Filter groups after aggregation

SQLite: Use HAVING to test a group’s calculated total.

SQLite✓ Tested
GitCommit history & revision selection

Find a commit that changed the count of a text string

Git: The pickaxe -S option finds commits that add or remove occurrences of a literal string.

Git✓ Tested
C++Strings

Find a substring

Check the result of std::string::find against npos.

C++✓ Tested
CStrings

Find a substring

Use strstr to find a literal substring in a C string.

C✓ Tested
JavaStream transformations

Group strings by their length

Java: Choose a TreeMap supplier when group keys must have deterministic order.

Java✓ Tested