thinkphp5, 结合pgsql使用时, 要先运行这段sql代码

按照tp5的官方文档的说法, 必须这么做: 先执行一段sql代码

 

  1 CREATE OR REPLACE FUNCTION pgsql_type(a_type varchar) RETURNS varchar AS
  2 $BODY$
  3 DECLARE
  4      v_type varchar;
  5 BEGIN
  6      IF a_type='int8' THEN
  7           v_type:='bigint';
  8      ELSIF a_type='int4' THEN
  9           v_type:='integer';
 10      ELSIF a_type='int2' THEN
 11           v_type:='smallint';
 12      ELSIF a_type='bpchar' THEN
 13           v_type:='char';
 14      ELSE
 15           v_type:=a_type;
 16      END IF;
 17      RETURN v_type;
 18 END;
 19 $BODY$
 20 LANGUAGE PLPGSQL;
 21 
 22 CREATE TYPE "public"."tablestruct" AS (
 23   "fields_key_name" varchar(100),
 24   "fields_name" VARCHAR(200),
 25   "fields_type" VARCHAR(20),
 26   "fields_length" BIGINT,
 27   "fields_not_null" VARCHAR(10),
 28   "fields_default" VARCHAR(500),
 29   "fields_comment" VARCHAR(1000)
 30 );
 31 
 32 CREATE OR REPLACE FUNCTION "public"."table_msg" (a_schema_name varchar, a_table_name varchar) RETURNS SETOF "public"."tablestruct" AS
 33 $body$
 34 DECLARE
 35      v_ret tablestruct;
 36      v_oid oid;
 37      v_sql varchar;
 38      v_rec RECORD;
 39      v_key varchar;
 40 BEGIN
 41      SELECT
 42            pg_class.oid  INTO v_oid
 43      FROM
 44            pg_class
 45            INNER JOIN pg_namespace ON (pg_class.relnamespace = pg_namespace.oid AND lower(pg_namespace.nspname) = a_schema_name)
 46      WHERE
 47            pg_class.relname=a_table_name;
 48      IF NOT FOUND THEN
 49          RETURN;
 50      END IF;
 51 
 52      v_sql='
 53      SELECT
 54            pg_attribute.attname AS fields_name,
 55            pg_attribute.attnum AS fields_index,
 56            pgsql_type(pg_type.typname::varchar) AS fields_type,
 57            pg_attribute.atttypmod-4 as fields_length,
 58            CASE WHEN pg_attribute.attnotnull  THEN ''not null''
 59            ELSE ''''
 60            END AS fields_not_null,
 61            pg_attrdef.adsrc AS fields_default,
 62            pg_description.description AS fields_comment
 63      FROM
 64            pg_attribute
 65            INNER JOIN pg_class  ON pg_attribute.attrelid = pg_class.oid
 66            INNER JOIN pg_type   ON pg_attribute.atttypid = pg_type.oid
 67            LEFT OUTER JOIN pg_attrdef ON pg_attrdef.adrelid = pg_class.oid AND pg_attrdef.adnum = pg_attribute.attnum
 68            LEFT OUTER JOIN pg_description ON pg_description.objoid = pg_class.oid AND pg_description.objsubid = pg_attribute.attnum
 69      WHERE
 70            pg_attribute.attnum > 0
 71            AND attisdropped <> ''t''
 72            AND pg_class.oid = ' || v_oid || '
 73      ORDER BY pg_attribute.attnum' ;
 74 
 75      FOR v_rec IN EXECUTE v_sql LOOP
 76          v_ret.fields_name=v_rec.fields_name;
 77          v_ret.fields_type=v_rec.fields_type;
 78          IF v_rec.fields_length > 0 THEN
 79             v_ret.fields_length:=v_rec.fields_length;
 80          ELSE
 81             v_ret.fields_length:=NULL;
 82          END IF;
 83          v_ret.fields_not_null=v_rec.fields_not_null;
 84          v_ret.fields_default=v_rec.fields_default;
 85          v_ret.fields_comment=v_rec.fields_comment;
 86          SELECT constraint_name INTO v_key FROM information_schema.key_column_usage WHERE table_schema=a_schema_name AND table_name=a_table_name AND column_name=v_rec.fields_name;
 87          IF FOUND THEN
 88             v_ret.fields_key_name=v_key;
 89          ELSE
 90             v_ret.fields_key_name='';
 91          END IF;
 92          RETURN NEXT v_ret;
 93      END LOOP;
 94      RETURN ;
 95 END;
 96 $body$
 97 LANGUAGE 'plpgsql' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER;
 98 
 99 COMMENT ON FUNCTION "public"."table_msg"(a_schema_name varchar, a_table_name varchar)
100 IS '获得表信息';
101 
102 ---重载一个函数
103 CREATE OR REPLACE FUNCTION "public"."table_msg" (a_table_name varchar) RETURNS SETOF "public"."tablestruct" AS
104 $body$
105 DECLARE
106     v_ret tablestruct;
107 BEGIN
108     FOR v_ret IN SELECT * FROM table_msg('public',a_table_name) LOOP
109         RETURN NEXT v_ret;
110     END LOOP;
111     RETURN;
112 END;
113 $body$
114 LANGUAGE 'plpgsql' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER;
115 
116 COMMENT ON FUNCTION "public"."table_msg"(a_table_name varchar)
117 IS '获得表信息';

 

 

 

 

;

转载于:https://www.cnblogs.com/upup2015/p/7773575.html