create table sql
# Simple table describing a vehicle
CREATE TABLE vehicle(
# vehicleId: Unique ID for Primary Key.
# This is how we will reference a record
vehicleId INT NOT NULL,
make VARCHAR(64), # String 64 chars max
model VARCHAR(128),
derivative VARCHAR(255),
PRIMARY KEY(vehicleId)
);
# Add a record
INSERT INTO vehicle VALUES(1000,'Volkswagen','Golf','1.5 TSI EVO Match Edition 5dr');create table sql
CREATE TABLE table_name(
id INT AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(255), # String 255 chars max
date DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
longtext BLOB
);sql server create constraint
ALTER TABLE my_table ALTER COLUMN [Name] VARCHAR(50) NOT NULL;
ALTER TABLE my_table ADD CONSTRAINT UQ__Constrai UNIQUE (ID);
ALTER TABLE my_table ADD PRIMARY KEY (ID);
-- Get constraints names
SELECT CONSTRAINT_NAME,
TABLE_SCHEMA ,
TABLE_NAME,
CONSTRAINT_TYPE
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
WHERE TABLE_NAME='my_table';
ALTER TABLE my_table DROP CONSTRAINT PK__Constrai__xxxxx;Copyright © 2021 Codeinu
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