psycopg2 在 executemany 语句中插入 table 名称

Question

我正在尝试将数据插入 table。 table 在程序开始时确定并始终保持不变。如何在如下所示的执行多个语句中插入 table 名称？

tbl = 'table_name'
rows = [{'this':x, 'that': x+1} for x in range(10)]
cur.executemany("""INSERT INTO %(tbl)s 
                  VALUES(
                          %(this)s,
                          %(that)s
                  )""", rows)

Answer 1

如官方文档所述："Only query values should be bound via this method: it shouldn’t be used to merge table or field names to the query. If you need to generate dynamically an SQL query (for instance choosing dynamically a table name) you can use the facilities provided by the psycopg2.sql module."

语法如下：

from psycopg2 import sql
tbl = 'table_name'
rows = [{'this':x, 'that': x+1} for x in range(10)]
cur.execute(
    sql.SQL("INSERT INTO {} VALUES (%(this)s, %(that)s);"""")
        .format(sql.Identifier(tbl)), rows)

更多关于http://initd.org/psycopg/docs/sql.html#module-psycopg2.sql

psycopg2 在 executemany 语句中插入 table 名称

psycopg2 interpolate table name in executemany statement

python

psycopg2