PostgreSQL Insert Delete Update 33 codes

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1 A simple UPDATE
2 Delete a single row
3 Delete all rows in a table
4 DELETE ONLY from parent table
5 Deleting all table rows
6 Deleting rows from a table
7 Do calculation in select statement
8 Do math calculation in select statement
9 Fill the columns from the left with as many values as are given, and the rest will be defaulted
10 Insert date data to table
11 INSERT INTO vv SELECT abc def
12 Insert into by select statement
13 Insert only an ID
14 Inserts a single row into the employees table
15 List the columns explicitly
16 Omit values
17 Query a single row
18 Removes all with conditions
19 Request default values explicitly for the entire row
20 Request default values explicitly, for individual columns
21 Restructuring a table with CREATE TABLE and INSERT INTO
22 The data values are listed in the order in which the columns appear in the table, separated by commas
23 Update a single row
24 Update in a slice
25 Update two columns in one single statement
26 Updating entire columns
27 Updating Several Columns
28 Use aggregate function in select statement
29 Using defined function in select statement
30 Using expression in update statement
31 Using UPDATE with several Employees
32 Using user defined function to update table data
33 Write expressions, not just simple column references, in the select list