forked from opengaussexamples/examples
21 lines
1.2 KiB
Plaintext
21 lines
1.2 KiB
Plaintext
CREATE TEMPORARY? TABLE _table ( (_column _type column_constraint), (_column _type column_constraint)* table_constraint?)
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table_constraint: PRIMARY KEY
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# Example：CONSTRAINT pk_example PRIMARY KEY (column1, column2)
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| UNIQUE
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# Example：CONSTRAINT uk_example UNIQUE (column1)
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| FOREIGN KEY
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# Example：CONSTRAINT fk_example FOREIGN KEY (column1) REFERENCES other_table(column2)
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| CHECK
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# Example：CONSTRAINT chk_example CHECK (column1 > 0)
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column_constraint: NOT NULL
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# Example：column_name VARCHAR2(50) NOT NULL
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| PRIMARY KEY
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# Example：column_name NUMBER(10) PRIMARY KEY
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| UNIQUE
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# Example：column_name VARCHAR2(50) UNIQUE
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| CHECK
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# Example：column_name NUMBER CHECK (column_name > 0)
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| FOREIGN KEY
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# Example：column_name NUMBER(10) REFERENCES other_table(other_column)
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| DEFAULT
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# Example：column_name VARCHAR2(50) DEFAULT 'default_value' |