1. Standardize some small specifications for using insert statements
1) It is best to add an N before the Chinese string
2) Expand the column name with square brackets Like this [Column name]
2. Conventional writing
Insert into tableName
([column1], [column2])
values
(N'Chinese','11ds')
3. Multiple rows and one statement to insert multiple rows
insert into table name ( [Column 1], [Column 2])
‐ ion will filter out Duplicate rows, and union all will be inserted in all
select 'value 3', 'value 4' union select 'value 5', 'value 6'
4. Copy the original table to the new table Copy the data in to a new table that does not exist
select * into newtable from oldtable
--How to copy only the table structure?
select * into newtable from oldtable where 11
select top 0 * into newtable from oldtable
5. Insert data from other tables into an existing table and copy data from other tables
insert into tablename(column,column2)
Select column,column2 from oldtable
6. Force write Force write to the identification field.
--For columns that have been set to auto-grow, we cannot enter values for them by default.
--You can use the following statement to force writing.
--1) Turn on adding, (remove restrictions on adding)
Set indentity_insert tablename On
--2) You can manually insert the id
insert into indicates (id, name) values ('1002', 'Sophomore')
--3) Turn off manual insertion
Set indentity_insert tablename off

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