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about "strict" mode
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On performance, it is exactly the affinity issue in that link which confuses me.
In strict mode, why all these checks required and dropping them would not improve insertion time?
"A column with NUMERIC affinity may contain values using all five storage classes. When text data is inserted into a NUMERIC column, the storage class of the text is converted to INTEGER or REAL (in order of preference) if the text is a well-formed integer or real literal, respectively. If the TEXT value is a well-formed integer literal that is too large to fit in a 64-bit signed integer, it is converted to REAL."