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https://github.com/chubin/cheat.sheets
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23 lines
603 B
Plaintext
23 lines
603 B
Plaintext
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# Add column
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ALTER TABLE <table_name> IF EXISTS
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ADD <column_name> <data_type> [<constraints>];
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# Update column
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ALTER TABLE <table_name> IF EXISTS
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ALTER <column_name> TYPE <data_type> [<constraints>];
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# Delete column
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ALTER TABLE <table_name> IF EXISTS
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DROP <column_name>;
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# Update column to be an auto-incrementing primary key
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ALTER TABLE <table_name>
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ADD COLUMN <column_name> SERIAL PRIMARY KEY;
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# Insert into a table, with an auto-incrementing primary key
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INSERT INTO <table_name>
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VALUES (DEFAULT, <value1>);
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#
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INSERT INTO <table_name> (<column1_name>,<column2_name>)
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VALUES ( <value1>,<value2> );
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