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STARTSWITH (NoSQL query)

  • Artikkeli

APPLIES TO: NoSQL

Returns a boolean value indicating whether the first string expression starts with the second.

Syntax

STARTSWITH(<string_expr_1>, <string_expr_2> [, <bool_expr>])

Arguments

Description
string_expr_1 A string expression.
string_expr_2 A string expression to be compared to the beginning of string_expr_1.
bool_expr (Optional) Optional value for ignoring case. When set to true, STARTSWITH does a case-insensitive search. When unspecified, this default value is false.

Return types

Returns a boolean expression.

Examples

The following example checks if the string abc starts with b or ab.

SELECT VALUE {
    startsWithWrongPrefix: STARTSWITH("AdventureWorks", "Works"),
    startsWithCorrectPrefix: STARTSWITH("AdventureWorks", "Adventure"),
    startsWithPrefixWrongCase: STARTSWITH("AdventureWorks", "adventure"),
    startsWithPrefixCaseInsensitive: STARTSWITH("AdventureWorks", "adventure", true)
}

[
  {
    "startsWithWrongPrefix": false,
    "startsWithCorrectPrefix": true,
    "startsWithPrefixWrongCase": false,
    "startsWithPrefixCaseInsensitive": true
  }
]

Remarks

  • This function performs a precise index scan.

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