If one more field is added to a table in php, will it affect other programs that use this table? One more field is added to a table in php & nbsp;, does it affect other programs that use this table? ------ Solution -------------------- This does not affect! ------ Solution ------------------ it depends on whether it is & nbsp; not & nbsp; null & nbsp; and whether a field is added to a table with the default value of php, does it affect other programs that use this table?
If one more field is added to a table in php, will it affect other programs that use this table?
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This has no effect!
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It depends on whether it is not null and whether there is a default value.
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If not null is not added, an error is reported.
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Do not use null for fields, which affects query efficiency. set a default value. set 0 for int type and "" for varchar, which should not affect other fields.
