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[英]ProgrammingError while insert list in table using mysql python
[英]ProgrammingError while trying to insert data into a MySQL table using Python
雖然我對 SQL 很陌生,但我已經使用 python 來構建數據庫,但現在我被卡住了。
簡單來說,我有一個包含三個表的模式,它們通過外鍵相互關聯。 它們是使用 python 創建的,如下所述(未顯示c
和conn
的定義,因為我很確定錯誤不存在):
import sqlalchemy
import pandas as pd
# create the runsMaster table
c.execute("""CREATE TABLE IF NOT EXISTS `ngsRunStats_FK`.`runsMaster` (
`run_ID` INT NOT NULL AUTO_INCREMENT,
`run_name` VARCHAR(50) NULL,
PRIMARY KEY (`run_ID`))
ENGINE = InnoDB""")
# Create the samplesMaster table
c.execute("""CREATE TABLE IF NOT EXISTS `ngsRunStats_FK`.`samplesMaster` (
`sample_ID` INT NOT NULL AUTO_INCREMENT,
`run_ID` INT NULL,
`sample_name` VARCHAR(50) NULL,
PRIMARY KEY (`sample_ID`),
INDEX `fk_table1_runsMaster1_idx` (`run_ID` ASC),
CONSTRAINT `fk_table1_runsMaster1`
FOREIGN KEY (`run_ID`)
REFERENCES `ngsRunStats_FK`.`runsMaster` (`run_ID`)
ON DELETE CASCADE
ON UPDATE NO ACTION)
ENGINE = InnoDB""")
# Create the XYStats table
c.execute("""CREATE TABLE IF NOT EXISTS `ngsRunStats_FK`.`XYstats` (
`XYstats_ID` INT NOT NULL AUTO_INCREMENT,
`run_ID` INT NULL,
`sample_ID` INT NULL,
`X_TOTAL_COVERAGE` FLOAT NULL,
`X_TARGET_COUNT` FLOAT NULL,
`X_MEAN_TARGET_COVERAGE` FLOAT NULL,
`Y_TOTAL_COVERAGE` FLOAT NULL,
`Y_TARGET_COUNT` FLOAT NULL,
`Y_MEAN_TARGET_COVERAGE` FLOAT NULL,
`Ymeancov_Xmeancov` FLOAT NULL,
PRIMARY KEY (`XYstats_ID`),
INDEX `fk_XYstats_runsMaster_idx` (`run_ID` ASC),
INDEX `fk_XYstats_samplesMaster1_idx` (`sample_ID` ASC),
CONSTRAINT `fk_XYstats_runsMaster`
FOREIGN KEY (`run_ID`)
REFERENCES `ngsRunStats_FK`.`runsMaster` (`run_ID`)
ON DELETE CASCADE
ON UPDATE NO ACTION,
CONSTRAINT `fk_XYstats_samplesMaster1`
FOREIGN KEY (`sample_ID`)
REFERENCES `ngsRunStats_FK`.`samplesMaster` (`sample_ID`)
ON DELETE CASCADE
ON UPDATE NO ACTION)
ENGINE = InnoDB""")
samplesMaster
和runsMaster
表都工作正常。 它們是從其他迭代中自動填充的,這些迭代對於理解這個問題並不那么重要。
經過幾次操作,我想從 pandas df ( XY_df
) 中提取一些值並插入到XYStats
表中。 我的 pandas df 如下所示
0 1 2 3
0 X 121424.000000 64.0 1897.26000
1 Y 14.019900 4.0 3.50497
2 Ymeancov/Xmeancov 0.001847 NaN NaN
下面是可以使用XY_df.to_dict()
從表中獲取的字典
{0: {0: 'X', 1: 'Y', 2: 'Ymeancov/Xmeancov'},
1: {0: 121424.0, 1: 14.0199, 2: 0.00184739},
2: {0: 64.0, 1: 4.0, 2: nan},
3: {0: 1897.26, 1: 3.5049699999999997, 2: nan}}
我用來填充XYStats
表的代碼如下所示:
c.execute(f"""INSERT INTO XYstats (run_ID, sample_ID, X_TOTAL_COVERAGE, X_TARGET_COUNT, X_MEAN_TARGET_COVERAGE, Y_TOTAL_COVERAGE, Y_TARGET_COUNT, Y_MEAN_TARGET_COVERAGE, Ymeancov_Xmeancov)
VALUES
('{runID}',
'{sampleID}',
'{XY_df.iloc[0,1]}',
'{XY_df.iloc[0,2]}',
'{XY_df.iloc[0,3]}',
'{XY_df.iloc[1,1]}',
'{XY_df.iloc[1,2]}',
'{XY_df.iloc[1,3]}',
'{XY_df.iloc[2,1]}'
""")
conn.commit()
但后來我得到
ProgrammingError: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 11
我認為這根本沒有信息
我很確定我的錯誤不在於
runsMaster
和samplesMaster
的方式XYStats
表中的數據類型> XY_df
是 pandas 數據幀,我試圖插入的數據類型(例如XY_df.iloc[0,3]
)是numpy.float64
( type(XY_df.iloc[0,1])
)但除此之外,我對正在發生的事情一無所知,因為我收到的錯誤消息非常模糊。
該錯誤是您在 SQL 上執行的查詢中的語法錯誤。 在 VALUES 之后有一個未閉合的括號。 您需要做的就是在查詢字符串的末尾添加一個右括號,然后您就可以使用 go:
c.execute(f"""INSERT INTO XYstats (run_ID, sample_ID, X_TOTAL_COVERAGE, X_TARGET_COUNT, X_MEAN_TARGET_COVERAGE, Y_TOTAL_COVERAGE, Y_TARGET_COUNT, Y_MEAN_TARGET_COVERAGE, Ymeancov_Xmeancov)
VALUES
('{runID}',
'{sampleID}',
'{XY_df.iloc[0,1]}',
'{XY_df.iloc[0,2]}',
'{XY_df.iloc[0,3]}',
'{XY_df.iloc[1,1]}',
'{XY_df.iloc[1,2]}',
'{XY_df.iloc[1,3]}',
'{XY_df.iloc[2,1]}')
""")
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