Question

create table `Salary`(
`sa_id` int unsigned,
`es_id` int unsigned,
`po_id` int unsigned,
`value` int (10),
`lose` int (10),
`days` int (10),
`lose_note` varchar (50),
PRIMARY KEY(`sa_id`),
CONSTRAINT po_sa FOREIGN KEY (`po_id`)
REFERENCES Position(`po_id`)
CONSTRAINT es_sa FOREIGN KEY (`es_id`)
REFERENCES Employee_stat(`es_id`)
)ENGINE=InnoDB CHARSET=utf8 COMMENT="Table";

Answer 1

您在REFERENCES Position(po_id)

之后缺少逗号

Answer 2

第一次参考后，逗号错过了。您的查询将是：

CREATE TABLE `Salary`(
    `sa_id` int unsigned,
    `es_id` int unsigned,
    `po_id` int unsigned,
    `value` int (10),
    `lose` int (10),
    `days` int (10),
    `lose_note` varchar (50),
    PRIMARY KEY(`sa_id`),
    CONSTRAINT po_sa FOREIGN KEY (`po_id`)
    REFERENCES Position(`po_id`), -- missed the comma here
    CONSTRAINT es_sa FOREIGN KEY (`es_id`)
    REFERENCES Employee_stat(`es_id`)
)ENGINE=InnoDB CHARSET=utf8 COMMENT="Table";

Answer 3

缺少-- -- Procedure to replicate the value of sequences from source to destination schema -- -- The database link name must be PROD -- -- SQL> CREATE DATABASE LINK PROD CONNECT TO ... -- CREATE OR REPLACE PROCEDURE RESET_SEQUENCES AS CURSOR CSEQUENCES IS SELECT SEQUENCE_NAME FROM USER_SEQUENCES@PROD; L_SEQUENCE_NAME USER_SEQUENCES.SEQUENCE_NAME%TYPE; L_SRC_SEQ_VALUE USER_SEQUENCES.MAX_VALUE%TYPE; L_DST_SEQ_VALUE USER_SEQUENCES.MAX_VALUE%TYPE; L_SQL VARCHAR2(200); BEGIN OPEN CSEQUENCES; LOOP FETCH CSEQUENCES INTO L_SEQUENCE_NAME; EXIT WHEN CSEQUENCES%NOTFOUND; -- -- Select sequence value from source schema -- L_SQL := 'SELECT '|| L_SEQUENCE_NAME ||'.NEXTVAL@PROD FROM DUAL'; EXECUTE IMMEDIATE L_SQL INTO L_SRC_SEQ_VALUE; -- -- Select sequence value from destination schema -- L_SQL := 'SELECT '|| L_SEQUENCE_NAME ||'.NEXTVAL FROM DUAL'; EXECUTE IMMEDIATE L_SQL INTO L_DST_SEQ_VALUE; DBMS_OUTPUT.PUT_LINE('SEQUENCE_NAME: '||L_SEQUENCE_NAME); DBMS_OUTPUT.PUT_LINE('::BEFORE => SRC VALUE: '||L_SRC_SEQ_VALUE||' DST VALUE: '||L_DST_SEQ_VALUE); -- -- Synchronize sequences value, only if necessary -- IF L_SRC_SEQ_VALUE > L_DST_SEQ_VALUE THEN -- -- Alter increment by to diference between L_SRC_SEQ_VALUE and L_DST_SEQ_VALUE -- L_SQL := 'ALTER SEQUENCE '|| L_SEQUENCE_NAME ||' INCREMENT BY '||TO_CHAR(L_SRC_SEQ_VALUE-L_DST_SEQ_VALUE); EXECUTE IMMEDIATE L_SQL; -- -- Select sequence value -- L_SQL := 'SELECT '|| L_SEQUENCE_NAME ||'.NEXTVAL FROM DUAL'; EXECUTE IMMEDIATE L_SQL INTO L_DST_SEQ_VALUE; -- -- Alter increment by back to 1 -- L_SQL := 'ALTER SEQUENCE '|| L_SEQUENCE_NAME ||' INCREMENT BY 1'; EXECUTE IMMEDIATE L_SQL; END IF; DBMS_OUTPUT.PUT_LINE('::AFTER => SRC VALUE: '||L_SRC_SEQ_VALUE||' DST VALUE: '||L_DST_SEQ_VALUE); END LOOP; CLOSE CSEQUENCES; END RESET_SEQUENCES; / -- -- EXECUTE RESET_SEQUENCES PROCEDURE AND BE HAPPY! -- SQL> EXEC RESET_SEQUENCES运算符，如下所示

将您的PRIMARY KEY(`sa_id`), CONSTRAINT po_sa FOREIGN KEY (`po_id`) <-- Here声明更改为

CREATE TABLE

Answer 4

它显示没有反引号的位置，并且缺少逗号是问题。

SQL FIDDLE

create table `Salary`(
`sa_id` int unsigned,
`es_id` int unsigned,
`po_id` int unsigned,
`value` int (10),
`lose` int (10),
`days` int (10),
`lose_note` varchar (50),
PRIMARY KEY(`sa_id`),
CONSTRAINT po_sa FOREIGN KEY (`po_id`)
REFERENCES `Position`(`po_id`),  --Backticks & comma
CONSTRAINT es_sa FOREIGN KEY (`es_id`)
REFERENCES Employee_stat(`es_id`)
)ENGINE=InnoDB CHARSET=utf8 COMMENT="Table";

创建表时收到此错误消息“ERROR 1064（42000）”

4 个答案: