Visual FoxPro uses the default value if you use the ALTER TABLE - SQL command to remove autoincrementing for the field. PRIMARY KEY | UNIQUE PRIMARY KEY creates a primary index for the field specified in FieldN
Visual FoxPro uses the default value if you use the SQL ALTER TABLEcommand to remove autoincrementing for the field.PRIMARY KEY | UNIQUE PRIMARY KEY creates a primary index for the field specified in FieldName1. UNIQUE creates a candidate index for the field specified in FieldName1. The ...
SQL Commands and Functions Share via Facebookx.comLinkedInEmail CREATE TABLE - SQL Command 11/14/2006 Creates a table using the specified fields or from an array. Copy CREATE TABLE | DBF TableName1 [NAME LongTableName] [FREE] ( FieldName1 FieldType [( nFieldWidth [, nPrecision] )] [...
Creates a table having the specified fields.The Visual FoxPro ODBC Driver supports the native Visual FoxPro language syntax for this command. For driver-specific information, see Driver Remarks.SyntaxCopy CREATE TABLE | DBF TableName1 [NAME LongTableName] [FREE] (FieldName1FieldType [(n...
候選索引(在 CREATE TABLE 或 ALTER TABLE - SQL 中包含 UNIQUE 選項所建立的索引,與 INDEX 命令中的 UNIQUE 選項所建立的索引不同。 在 INDEX 命令中使用 UNIQUE 選項建立的索引允許重複索引鍵;候選索引不允許重複的索引鍵。 如需 UNIQUE 選項的其他資訊,請參閱 INDEX。 在用於主要或候選索引的欄位中,不允許...
Here, the SQL command creates a database namedCompanieswith the columns:id,name,address,emailandphone. SQL CREATE TABLE Syntax CREATETABLEtable_name ( column1 datatype, column2 datatype, column3 datatype, ... ); Here, table_nameis name of the table you want to create column...
command creates a new table in the database. The following SQL creates a table called "Persons" that contains five columns: PersonID, LastName, FirstName, Address, and City:ExampleGet your own SQL Server CREATE TABLE Persons ( PersonID int, LastName varchar(255), FirstName varchar(255), ...
Type the following SQL statement: CREATE TABLE Cars (Name TEXT(30), Year TEXT(4), Price CURRENCY) On the Design tab, in the Results group, click Run. Modify a table To modify a table, you use an ALTER TABLE command. You can use an ALTER TABLE...
This command is used to create a table. This article mainly introduces the syntax of creating tables self-maintained by Palo. For syntax of external tables, refer to [CREATE EXTERNAL TABLE](PALO/Operating Manual/Data Load /Synchronize Data Through External Table.md#) Document. CREATE TABLE [IF...
13 SQL Statements: COMMIT to CREATE JAVA 14 SQL Statements: CREATE LIBRARY to CREATE SCHEMA 15 SQL Statements: CREATE SEQUENCE to DROP CLUSTER CREATE SEQUENCE CREATE SPFILE CREATE SYNONYM CREATE TABLE CREATE TABLESPACE CREATE TABLESPACE SET CREATE TRIGGER CREATE TYPE CREATE TYPE BODY CREATE USER CREAT...