StringExpressionOperators extension

Defines methods that operate on a column storing String values.

on

• Expression<String?>

Properties

length → Expression<int?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Calls the sqlite function LENGTH on this string, which counts the number of characters in this string. Note that, in most sqlite installations, length may not support all unicode rules.

no setter

Methods

collate(Collate collate) → Expression<String>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Uses the given collate sequence when comparing this column to other values.

contains(String substring) → Expression<bool?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Whether this expression contains substring.

like(String regex) → Expression<bool?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Whether this column matches the given pattern. For details on what patters are valid and how they are interpreted, check out this tutorial.

lower() → Expression<String?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Calls the sqlite function LOWER on this string. Please note that, in most sqlite installations, this only affects ascii chars.

regexp(String regex, {bool multiLine = false, bool caseSensitive = true, bool unicode = false, bool dotAll = false}) → Expression<bool?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Matches this string against the regular expression in regex.

trim() → Expression<String?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Removes spaces from both ends of this string.

trimLeft() → Expression<String?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Removes spaces from the beginning of this string.

trimRight() → Expression<String?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Removes spaces from the end of this string.

upper() → Expression<String?>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Calls the sqlite function UPPER on this string. Please note that, in most sqlite installations, this only affects ascii chars.

Operators

operator +(Expression<String?> other) → Expression<String>

Available on Expression<String?>, provided by the StringExpressionOperators extension

Performs a string concatenation in sql by appending other to this.