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Add new function mappings in 8.0
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Part of #4419
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bricelam committed Jul 27, 2023
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150 changes: 76 additions & 74 deletions entity-framework/core/providers/cosmos/functions.md
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title: Function Mappings - Azure Cosmos DB Provider - EF Core
description: Function Mappings of the Azure Cosmos DB EF Core Provider
author: bricelam
ms.date: 10/11/2021
ms.date: 7/26/2023
uid: core/providers/cosmos/functions
---
# Function Mappings of the Azure Cosmos DB EF Core Provider
Expand All @@ -11,85 +11,87 @@ This page shows which .NET members are translated into which SQL functions when

## Date and time functions

| .NET | SQL |
|-----------------------|----------------------|
| DateTime.UtcNow | GetCurrentDateTime() |
| DateTimeOffset.UtcNow | GetCurrentDateTime() |
.NET | SQL
--------------------- | ---
DateTime.UtcNow | GetCurrentDateTime()
DateTimeOffset.UtcNow | GetCurrentDateTime()

## Numeric functions

| .NET | SQL |
|-----------------------|-------------------|
| EF.Functions.Random() | RAND() |
| Math.Abs(value) | ABS(@value) |
| Math.Acos(d) | ACOS(@d) |
| Math.Asin(d) | ASIN(@d) |
| Math.Atan(d) | ATAN(@d) |
| Math.Atan2(y, x) | ATN2(@y, @x) |
| Math.Ceiling(d) | CEILING(@d) |
| Math.Cos(d) | COS(@d) |
| Math.Exp(d) | EXP(@d) |
| Math.Floor(d) | FLOOR(@d) |
| Math.Log(a, newBase) | LOG(@a, @newBase) |
| Math.Log(d) | LOG(@d) |
| Math.Log10(d) | LOG10(@d) |
| Math.Pow(x, y) | POWER(@x, @y) |
| Math.Round(d) | ROUND(@d) |
| Math.Sign(value) | SIGN(@value) |
| Math.Sin(a) | SIN(@a) |
| Math.Sqrt(d) | SQRT(@d) |
| Math.Tan(a) | TAN(@a) |
| Math.Truncate(d) | TRUNC(@d) |
| MathF.Abs(x) | ABS(@x) |
| MathF.Acos(x) | ACOS(@x) |
| MathF.Asin(x) | ASIN(@x) |
| MathF.Atan(x) | ATAN(@x) |
| MathF.Atan2(y, x) | ATN2(@y, @x) |
| MathF.Ceiling(x) | CEILING(@x) |
| MathF.Cos(x) | COS(@x) |
| MathF.Exp(x) | EXP(@x) |
| MathF.Floor(x) | FLOOR(@x) |
| MathF.Log(x, y) | LOG(@x, @y) |
| MathF.Log(x) | LOG(@x) |
| MathF.Log10(x) | LOG10(@x) |
| MathF.Pow(x, y) | POWER(@x, @y) |
| MathF.Round(x) | ROUND(@x) |
| MathF.Sign(x) | SIGN(@x) |
| MathF.Sin(x) | SIN(@x) |
| MathF.Sqrt(x) | SQRT(@x) |
| MathF.Tan(x) | TAN(@x) |
| MathF.Truncate(x) | TRUNC(@x) |
.NET | SQL | Added in
-------------------------- | ----------------- | --------
double.DegreesToRadians(x) | RADIANS(@x) | EF Core 8.0
double.RadiansToDegrees(x) | DEGREES(@x) | EF Core 8.0
EF.Functions.Random() | RAND()
float.DegreesToRadians(x) | RADIANS(@x) | EF Core 8.0
float.RadiansToDegrees(x) | DEGREES(@x) | EF Core 8.0
Math.Abs(value) | ABS(@value)
Math.Acos(d) | ACOS(@d)
Math.Asin(d) | ASIN(@d)
Math.Atan(d) | ATAN(@d)
Math.Atan2(y, x) | ATN2(@y, @x)
Math.Ceiling(d) | CEILING(@d)
Math.Cos(d) | COS(@d)
Math.Exp(d) | EXP(@d)
Math.Floor(d) | FLOOR(@d)
Math.Log(a, newBase) | LOG(@a, @newBase)
Math.Log(d) | LOG(@d)
Math.Log10(d) | LOG10(@d)
Math.Pow(x, y) | POWER(@x, @y)
Math.Round(d) | ROUND(@d)
Math.Sign(value) | SIGN(@value)
Math.Sin(a) | SIN(@a)
Math.Sqrt(d) | SQRT(@d)
Math.Tan(a) | TAN(@a)
Math.Truncate(d) | TRUNC(@d)
MathF.Acos(x) | ACOS(@x)
MathF.Asin(x) | ASIN(@x)
MathF.Atan(x) | ATAN(@x)
MathF.Atan2(y, x) | ATN2(@y, @x)
MathF.Ceiling(x) | CEILING(@x)
MathF.Cos(x) | COS(@x)
MathF.Exp(x) | EXP(@x)
MathF.Floor(x) | FLOOR(@x)
MathF.Log(x, y) | LOG(@x, @y)
MathF.Log(x) | LOG(@x)
MathF.Log10(x) | LOG10(@x)
MathF.Pow(x, y) | POWER(@x, @y)
MathF.Round(x) | ROUND(@x)
MathF.Sin(x) | SIN(@x)
MathF.Sqrt(x) | SQRT(@x)
MathF.Tan(x) | TAN(@x)
MathF.Truncate(x) | TRUNC(@x)

## String functions

| .NET | SQL | Added in |
|---------------------------------------------------------------|------------------------------------------------------------|-------------|
| Regex.IsMatch(input, pattern) | RegexMatch(@pattern, @input) | EF Core 7.0 |
| Regex.IsMatch(input, pattern, options) | RegexMatch(@input, @pattern, @options) | EF Core 7.0 |
| string.Concat(str0, str1) | @str0 + @str1 | |
| string.Equals(a, b, StringComparison.Ordinal) | STRINGEQUALS(@a, @b) | |
| string.Equals(a, b, StringComparison.OrdinalIgnoreCase) | STRINGEQUALS(@a, @b, true) | |
| stringValue.Contains(value) | CONTAINS(@stringValue, @value) | |
| stringValue.EndsWith(value) | ENDSWITH(@stringValue, @value) | |
| stringValue.Equals(value, StringComparison.Ordinal) | STRINGEQUALS(@stringValue, @value) | |
| stringValue.Equals(value, StringComparison.OrdinalIgnoreCase) | STRINGEQUALS(@stringValue, @value, true) | |
| stringValue.FirstOrDefault() | LEFT(@stringValue, 1) | |
| stringValue.IndexOf(value) | INDEX_OF(@stringValue, @value) | |
| stringValue.IndexOf(value, startIndex) | INDEX_OF(@stringValue, @value, @startIndex) | |
| stringValue.LastOrDefault() | RIGHT(@stringValue, 1) | |
| stringValue.Length | LENGTH(@stringValue) | |
| stringValue.Replace(oldValue, newValue) | REPLACE(@stringValue, @oldValue, @newValue) | |
| stringValue.StartsWith(value) | STARTSWITH(@stringValue, @value) | |
| stringValue.Substring(startIndex) | SUBSTRING(@stringValue, @startIndex, LENGTH(@stringValue)) | |
| stringValue.Substring(startIndex, length) | SUBSTRING(@stringValue, @startIndex, @length) | |
| stringValue.ToLower() | LOWER(@stringValue) | |
| stringValue.ToUpper() | UPPER(@stringValue) | |
| stringValue.Trim() | TRIM(@stringValue) | |
| stringValue.TrimEnd() | RTRIM(@stringValue) | |
| stringValue.TrimStart() | LTRIM(@stringValue) | |
.NET | SQL | Added in
------------------------------------------------------------- | ---------------------------------------------------------- | --------
Regex.IsMatch(input, pattern) | RegexMatch(@pattern, @input) | EF Core 7.0
Regex.IsMatch(input, pattern, options) | RegexMatch(@input, @pattern, @options) | EF Core 7.0
string.Concat(str0, str1) | @str0 + @str1
string.Equals(a, b, StringComparison.Ordinal) | STRINGEQUALS(@a, @b)
string.Equals(a, b, StringComparison.OrdinalIgnoreCase) | STRINGEQUALS(@a, @b, true)
stringValue.Contains(value) | CONTAINS(@stringValue, @value)
stringValue.EndsWith(value) | ENDSWITH(@stringValue, @value)
stringValue.Equals(value, StringComparison.Ordinal) | STRINGEQUALS(@stringValue, @value)
stringValue.Equals(value, StringComparison.OrdinalIgnoreCase) | STRINGEQUALS(@stringValue, @value, true)
stringValue.FirstOrDefault() | LEFT(@stringValue, 1)
stringValue.IndexOf(value) | INDEX_OF(@stringValue, @value)
stringValue.IndexOf(value, startIndex) | INDEX_OF(@stringValue, @value, @startIndex)
stringValue.LastOrDefault() | RIGHT(@stringValue, 1)
stringValue.Length | LENGTH(@stringValue)
stringValue.Replace(oldValue, newValue) | REPLACE(@stringValue, @oldValue, @newValue)
stringValue.StartsWith(value) | STARTSWITH(@stringValue, @value)
stringValue.Substring(startIndex) | SUBSTRING(@stringValue, @startIndex, LENGTH(@stringValue))
stringValue.Substring(startIndex, length) | SUBSTRING(@stringValue, @startIndex, @length)
stringValue.ToLower() | LOWER(@stringValue)
stringValue.ToUpper() | UPPER(@stringValue)
stringValue.Trim() | TRIM(@stringValue)
stringValue.TrimEnd() | RTRIM(@stringValue)
stringValue.TrimStart() | LTRIM(@stringValue)

## Miscellaneous functions

| .NET | SQL |
|---------------------------|----------------------|
| collection.Contains(item) | @item IN @collection |
.NET | SQL
--------------------------|----
collection.Contains(item) | @item IN @collection
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