31 lines
932 B
Markdown
31 lines
932 B
Markdown
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# DatabaseColumnsCount
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Gets the number of fields in a request.
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```
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int DatabaseColumnsCount(
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int request // request handle received in DatabasePrepare
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);
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```
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Parameters
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request
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[in] Request handle received in [DatabasePrepare()](/en/docs/database/databaseprepare).
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Return Value
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Number of fields or -1 in case of an error. To get the error code, use GetLastError(), the possible responses are:
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- ERR_DATABASE_INVALID_HANDLE (5121) - invalid request handle.
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Note
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There is no need to call the [DatabaseRead()](/en/docs/database/databaseread) function to get the number of fields of a request created in DatabasePrepare(). For the remaining DatabaseColumnXXX() functions, DatabaseRead() should be preliminarily called.
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See also
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[DatabasePrepare](/en/docs/database/databaseprepare), [DatabaseFinalize](/en/docs/database/databasefinalize), [DatabaseClose](/en/docs/database/databaseclose)
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