React Native Firebase
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@react-native-firebase/firestore
pipelines/expressions
substring
Function substring
substring
(
_field
:
string
,
_position
:
number
,
_length
?:
number
,
)
:
FunctionExpression
Beta
Substring from position with optional length.
Parameters
_field
:
string
_position
:
number
Optional
_length
:
number
Returns
FunctionExpression
substring
(
_input
:
Expression
,
_position
:
number
,
_length
?:
number
,
)
:
FunctionExpression
Beta
Substring from position with optional length.
Parameters
_input
:
Expression
_position
:
number
Optional
_length
:
number
Returns
FunctionExpression
substring
(
_field
:
string
,
_position
:
Expression
,
_length
?:
Expression
,
)
:
FunctionExpression
Beta
Substring from position with optional length.
Parameters
_field
:
string
_position
:
Expression
Optional
_length
:
Expression
Returns
FunctionExpression
substring
(
_input
:
Expression
,
_position
:
Expression
,
_length
?:
Expression
,
)
:
FunctionExpression
Beta
Substring from position with optional length.
Parameters
_input
:
Expression
_position
:
Expression
Optional
_length
:
Expression
Returns
FunctionExpression
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Substring from position with optional length.